AP US History Quiz: Causation In Period 9

20 questions · exam conditions

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Causation In Period 9Question 1 of 20

Secondary-source excerpt (Period 9, 1980–present): Growing scientific consensus about climate change and visible environmental disruptions increased pressure for government action. However, the nation's reliance on fossil fuels, lobbying by energy interests, and partisan divisions limited the scope of federal legislation. As a result, many initiatives shifted toward state-level policies, court cases, and executive actions, while climate politics became a recurring source of national controversy.

Which option best identifies a cause of the shift toward state-level and executive initiatives described in the excerpt?

Broad bipartisan agreement in Congress made federal climate legislation easy to pass, reducing the need for state action.

Reliance on fossil fuels and partisan divisions constrained federal legislation, pushing action toward states, courts, and executive orders.

The disappearance of environmental disruptions after 1980 reduced public pressure for any action.

The end of the Progressive Era eliminated the use of executive power in environmental policy.

The ratification of the Nineteenth Amendment caused climate policy to move primarily to the states.

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AP US History Quiz

AP US History Quiz: Causation In Period 9

Practice Causation In Period 9 in AP US History with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

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This quiz focuses on Causation In Period 9, giving you a quick way to practice the rules, question types, and explanations that matter most for AP US History.

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Question 1

Which option best identifies a cause of the shift toward state-level and executive initiatives described in the excerpt?

Broad bipartisan agreement in Congress made federal climate legislation easy to pass, reducing the need for state action.
Reliance on fossil fuels and partisan divisions constrained federal legislation, pushing action toward states, courts, and executive orders. (correct answer)
The disappearance of environmental disruptions after 1980 reduced public pressure for any action.
The end of the Progressive Era eliminated the use of executive power in environmental policy.
The ratification of the Nineteenth Amendment caused climate policy to move primarily to the states.

Explanation: The excerpt identifies specific causes for why climate action shifted away from federal legislation: the nation's reliance on fossil fuels, lobbying by energy interests, and partisan divisions all limited federal legislative action. These constraints caused initiatives to move toward state-level policies, court cases, and executive actions instead. Option B correctly identifies these causes - fossil fuel reliance and partisan divisions constrained federal legislation, pushing action to other venues. Option A contradicts the text (there wasn't bipartisan agreement), C claims environmental disruptions disappeared (they increased), D makes an illogical connection to the Progressive Era, and E absurdly links women's suffrage to climate policy.

Question 2

Secondary-source excerpt (Period 9, 1980–present): Legal and cultural changes advanced LGBTQ+ rights in the late twentieth and early twenty-first centuries. Activism during the AIDS crisis increased visibility and pressured institutions to respond, while shifting public opinion and court decisions gradually expanded protections. The legalization of same-sex marriage in 2015 reflected these long-term trends, but it also prompted continued debates over religious liberty, discrimination law, and the role of the courts in social change.

Which choice best describes a cause of the 2015 outcome referenced in the excerpt?

Shifting public opinion and court decisions, influenced in part by activism and increased visibility, contributed to the legalization of same-sex marriage. (correct answer)
The Compromise of 1877 directly caused the legalization of same-sex marriage.
The end of Prohibition caused courts to expand LGBTQ+ protections in the 2010s.
The Korean War caused the AIDS crisis and thereby immediately legalized same-sex marriage in the 1980s.
The passage of the Homestead Act caused long-term debates over religious liberty after 2015.

Explanation: The excerpt traces the causes of same-sex marriage legalization in 2015: long-term activism (especially during the AIDS crisis) increased LGBTQ+ visibility, which helped shift public opinion, and these changes influenced court decisions that gradually expanded protections, culminating in marriage equality. Option A correctly identifies this causal chain - shifting opinion and court decisions, influenced by activism and visibility, led to legalization. The other options make nonsensical historical connections: B links the 1877 Compromise to marriage equality, C connects Prohibition's end to LGBTQ+ rights, D claims the Korean War caused the AIDS crisis and immediate marriage legalization, and E attributes modern religious liberty debates to the 1862 Homestead Act.

Question 3

During the 1990s and 2000s, the growth of the internet and mobile communication lowered the cost of sharing information and organizing across long distances. Activists increasingly used email lists, websites, and later social media to publicize events and coordinate participation quickly. Which development was most directly caused by these technological changes?

A decline in political mobilization because communication became slower
More rapid organization of social and political movements outside traditional institutions (correct answer)
The end of partisan media as all news became nonpolitical
A constitutional requirement that all voting occur online
The disappearance of interest groups due to reduced fundraising ability

Explanation: The 1990s and 2000s saw the internet and mobile technologies revolutionize communication, enabling instant information sharing and coordination without traditional barriers. Activists leveraged these tools for grassroots organizing, from email campaigns to social media-driven protests, bypassing established institutions like political parties. This directly caused more rapid organization of social and political movements, as seen in events like the Arab Spring or domestic advocacy. The lowered costs of mobilization empowered diverse groups, from environmentalists to civil rights advocates. However, it also led to challenges like misinformation. In Period 9, this technological causation transformed civic engagement and political activism.

Question 4

Secondary accounts of the 1990s note that advances in computing, the spread of the internet, and venture capital investment helped fuel growth in technology sectors. This contributed to rising productivity and the expansion of some high-skill jobs, while also widening gaps between workers with different levels of education and access to technology. Which choice best captures this cause-and-effect relationship?

The spread of the internet caused the United States to end international trade agreements in the 1990s.
New digital technologies and investment helped drive economic growth, while also contributing to greater inequality tied to education and skills. (correct answer)
Venture capital investment caused the immediate disappearance of all manufacturing jobs by 1995.
Rising productivity in the 1990s caused the federal government to abolish income taxes permanently.
Computing advances caused the Supreme Court to overturn the Bill of Rights to regulate the internet.

Explanation: This question examines the economic effects of the 1990s technology boom. The rise of the internet, advances in computing, and venture capital investment created new high-skill, high-paying jobs in technology sectors, driving economic growth and productivity gains. However, these benefits were not evenly distributed - workers with advanced education and technology skills prospered, while those without such advantages were left behind. This widened income inequality based on education and skill levels. Option B accurately captures this dual effect: technology drove growth while also contributing to greater inequality. The other options make extreme or false claims about the effects of technology advancement.

Question 5

Secondary-source excerpt (Period 9, 1980–present): The Reagan administration's emphasis on tax cuts and reduced regulation reflected a broader conservative critique of the postwar state. Supporters argued that lowering top marginal rates and easing rules on business would stimulate investment and growth. In practice, the policies contributed to rising after-tax income for high earners and encouraged corporate restructuring, while debates over deficits and inequality became more central to national politics in subsequent decades.

Which choice best explains an effect of the policies described in the excerpt?

They helped make debates over deficits and inequality more prominent in national politics. (correct answer)
They immediately ended partisan conflict over the role of the federal government.
They produced a permanent federal budget surplus by the mid-1980s.
They reversed suburbanization by shifting jobs from metropolitan areas to rural towns.
They caused the rapid expansion of union membership in heavy industry.

Explanation: The excerpt explains that Reagan's tax cuts and deregulation policies had specific effects: they increased after-tax income for high earners and encouraged corporate restructuring. Most importantly, these policies made debates over deficits and inequality more central to national politics in subsequent decades. Option A correctly identifies this effect - the policies helped make these economic issues more prominent in political discourse. Options B through E describe effects that either didn't happen (B - partisan conflict continued; C - deficits actually increased; D - suburbanization continued) or contradict historical facts (E - union membership declined during this period). The excerpt emphasizes how Reagan's policies shaped future political debates rather than producing immediate economic transformations.

Question 6

Secondary analyses of the 2008 financial crisis often highlight how expanded subprime lending, securitization of mortgages, and risky financial practices increased systemic vulnerability. When housing prices fell and mortgage defaults rose, financial institutions faced major losses, contributing to a credit crunch and severe recession. Which choice best expresses the causation described in these accounts?

Falling housing prices and rising defaults exposed vulnerabilities created by risky lending and securitization, contributing to a broader financial crisis and recession. (correct answer)
The 2008 crisis was caused primarily by the return to the gold standard in 2007.
Mortgage securitization eliminated risk from the financial system, preventing any recession.
The recession directly caused housing prices to rise sharply in 2008–2009.
The crisis was caused by the immediate abolition of the Federal Reserve during the early 2000s.

Explanation: This question examines the causes of the 2008 financial crisis. During the housing boom, banks made risky subprime loans to borrowers with poor credit, then packaged these mortgages into complex securities sold to investors. When housing prices began to fall and borrowers defaulted on their mortgages, these securities lost value rapidly. Financial institutions holding these toxic assets faced massive losses, creating a credit crunch that spread throughout the economy and triggered a severe recession. Option A correctly identifies this causal chain: falling housing prices and defaults exposed the risks created by subprime lending and securitization, leading to the broader crisis. The other options contain factually incorrect statements.

Question 7

Secondary scholarship on immigration since 1980 emphasizes that changes in global labor markets, family reunification provisions, and U.S. demand for workers increased immigration from Latin America and Asia. These demographic shifts contributed to growing linguistic and cultural diversity and influenced political debates over border enforcement and legal status. Which option best states a cause-and-effect relationship consistent with this interpretation?

Increased immigration after 1980 contributed to demographic change and intensified political debates over immigration policy and enforcement. (correct answer)
Immigration after 1980 caused the United States to stop holding elections in states with large immigrant populations.
Family reunification provisions caused the United States to end all legal immigration by 1990.
Greater cultural diversity caused the federal government to abolish public schools nationwide.
Immigration debates were caused mainly by the reopening of Ellis Island as the only legal port of entry in 2001.

Explanation: The question focuses on immigration's effects since 1980. Changes in immigration law, global economic conditions, and U.S. labor demand led to increased immigration, particularly from Latin America and Asia. This demographic shift made the U.S. more culturally and linguistically diverse, which in turn intensified political debates about immigration policy, border security, and pathways to citizenship. Option A correctly identifies this cause-and-effect relationship: increased immigration contributed to demographic changes that fueled ongoing political debates about immigration policy. The other options make extreme or false claims about immigration's effects that are not supported by historical evidence.

Question 8

Secondary-source excerpt (Period 9, 1980–present): Rising healthcare costs and gaps in insurance coverage shaped policy debates for decades. Supporters of the Affordable Care Act (2010) argued that expanding coverage through marketplaces, subsidies, and Medicaid growth would reduce the number of uninsured and limit cost shifting to emergency rooms. Opponents warned that mandates and regulations would disrupt existing plans. Implementation produced measurable coverage gains but also sparked partisan conflict and repeated legal and legislative challenges.

Which choice best identifies an effect of the policy described in the excerpt?

It ended partisan conflict over healthcare policy in the United States.
It produced coverage gains while also intensifying partisan and legal battles over healthcare. (correct answer)
It eliminated private insurance and replaced it with a single-payer system.
It caused healthcare costs to disappear as a political issue after 2010.
It immediately reduced all states' Medicaid spending by requiring universal budget cuts.

Explanation: The excerpt describes the Affordable Care Act's implementation and its dual effects: it produced measurable coverage gains (more people got insurance) while simultaneously sparking partisan conflict and repeated legal challenges. Option B accurately captures both of these effects - the policy expanded coverage but also intensified political and legal battles. The other options are factually wrong: A claims it ended partisan conflict (it increased it), C says it eliminated private insurance (the ACA worked through private insurers), D suggests healthcare costs disappeared as an issue (they remained contentious), and E describes mandatory budget cuts that didn't occur. The excerpt emphasizes how the ACA achieved its coverage goals while becoming a lightning rod for political opposition.

Question 9

Secondary-source excerpt (Period 9, 1980–present): Increased immigration from Latin America and Asia after 1965 continued into the late twentieth and early twenty-first centuries, reshaping local economies and demographics. In some regions, new arrivals revitalized labor forces and small businesses, while rapid change also generated political backlash. Debates over border enforcement, undocumented migration, and pathways to citizenship became central to national elections, contributing to shifting party coalitions and intensified cultural conflict.

Which option best describes a cause of the political backlash mentioned in the excerpt?

Rapid demographic and economic changes associated with increased immigration contributed to backlash and intensified political debates. (correct answer)
The end of Reconstruction caused late twentieth-century debates over border enforcement.
The Marshall Plan directly increased undocumented migration to the United States after 1980.
The abolition of slavery caused shifting party coalitions in the 2000s.
The closing of Ellis Island in 1954 ended immigration debates in national elections.

Explanation: The excerpt identifies the cause of political backlash as the rapid demographic and economic changes brought by increased immigration from Latin America and Asia. While immigration revitalized some local economies, the speed and scale of change in certain regions generated political opposition. Option A correctly identifies this cause - rapid changes in demographics and economics led to backlash and intensified debates. The other options make illogical historical connections: B links Reconstruction to modern border debates, C incorrectly connects the Marshall Plan to undocumented migration, D attributes modern party shifts to slavery's abolition, and E claims Ellis Island's closing ended immigration debates (which actually intensified decades later).

Question 10

Secondary histories of the 1980s describe how deindustrialization and the shift toward a service and technology economy reshaped many U.S. regions. As manufacturing employment declined in parts of the Midwest and Northeast, communities faced job losses and shrinking tax bases, while Sun Belt metros often grew with new industries and migration. Which choice best explains a major cause-and-effect relationship described by these accounts?

The decline of manufacturing employment contributed to economic stress in some industrial regions and encouraged internal migration toward faster-growing areas. (correct answer)
The rise of service-sector jobs caused the United States to abandon global trade and return to isolationism.
Deindustrialization caused all unions to be outlawed nationwide by the end of the 1980s.
Sun Belt growth was primarily caused by the end of air-conditioning after 1980, which reduced living costs.
Manufacturing decline directly caused the immediate end of suburbanization across the United States.

Explanation: This question examines the causes and effects of deindustrialization in the 1980s. As manufacturing jobs disappeared in the Rust Belt (Midwest and Northeast), workers and families faced unemployment and communities saw their tax bases shrink. This economic stress drove internal migration patterns, with people moving from declining industrial regions to growing Sun Belt areas in the South and West where new service and technology industries were emerging. Option A accurately captures this cause-and-effect relationship: manufacturing decline caused economic hardship in industrial regions, which in turn encouraged migration to areas with better economic opportunities. The other options contain factual errors or extreme claims not supported by historical evidence.

Question 11

Secondary source excerpt (Period 9, 1980–present): The 2008 financial crisis exposed how lightly regulated mortgage lending and complex financial products amplified risk throughout the banking system. When housing prices fell and borrowers defaulted, the resulting losses froze credit markets, prompting federal interventions to stabilize banks and stimulate the economy. The excerpt emphasizes that interconnected financial practices turned a housing downturn into a broader recession. Which choice best identifies the causation described?

The excerpt argues that federal bank stabilization caused the initial wave of mortgage defaults.
The fall of the Berlin Wall directly caused risky mortgage lending in the United States.
Risky lending and complex financial products helped spread housing-market losses into a wider credit crisis. (correct answer)
The excerpt claims that the crisis was caused solely by a sudden decline in agricultural exports.
The excerpt argues that the crisis ended all federal involvement in the economy after 2008.

Explanation: This question focuses on the causal chain of the 2008 financial crisis. The excerpt explains how lightly regulated mortgage lending and complex financial products amplified risk, and when housing prices fell and borrowers defaulted, these interconnected practices spread losses throughout the banking system. Option C correctly identifies this causation: risky lending and complex products → wider credit crisis. Option A reverses causation, option B absurdly links the Berlin Wall to mortgages, option D incorrectly attributes the crisis to agricultural exports, and option E contradicts the passage about federal interventions. The excerpt emphasizes how financial interconnectedness transformed a housing problem into a systemic crisis.

Question 12

Secondary source excerpt (Period 9, 1980–present): In the 1990s and 2000s, activists and courts debated the meaning of civil rights in areas such as disability access, gender equality, and LGBTQ+ rights. Over time, shifting public opinion and legal strategies helped expand protections in employment, public accommodations, and marriage. Which Supreme Court decision most directly reflected this longer-term change by legalizing same-sex marriage nationwide?

Plessy v. Ferguson (1896)
Obergefell v. Hodges (2015) (correct answer)
Dred Scott v. Sandford (1857)
Korematsu v. United States (1944)
Marbury v. Madison (1803)

Explanation: The correct answer is B. Obergefell v. Hodges (2015) most directly reflected the expansion of civil rights to LGBTQ+ Americans by ruling that same-sex couples have a constitutional right to marry. This decision represented the culmination of decades of activism and changing public opinion described in the excerpt. The other cases are from different eras and dealt with different issues: Plessy upheld segregation (A), Dred Scott denied citizenship to African Americans (C), Korematsu upheld Japanese internment (D), and Marbury established judicial review (E). Only Obergefell directly relates to the LGBTQ+ rights expansion mentioned in the passage.

Question 13

Secondary source excerpt (Period 9, 1980–present): As manufacturing employment declined and real wages stagnated for many noncollege workers in the late twentieth century, political debates increasingly centered on taxes, regulation, and cultural issues rather than on New Deal–style labor protections. These economic shifts, combined with suburbanization and the growth of Sun Belt states, helped conservatives build durable electoral coalitions. Which development most directly contributed to these political realignments by accelerating deindustrialization and wage pressure in the 1980s and 1990s?

The expansion of global trade and offshoring facilitated by trade liberalization and new logistics technologies (correct answer)
The immediate abolition of all federal income taxes after 1980
The federal government's decision to nationalize major U.S. steel and auto firms in the 1980s
A constitutional amendment requiring union membership for all private-sector workers
The end of suburban growth due to strict national limits on highway construction after 1980

Explanation: The correct answer is A. The expansion of global trade and offshoring, facilitated by trade liberalization policies and new logistics technologies, directly accelerated deindustrialization in the United States during the 1980s and 1990s. As companies moved manufacturing operations overseas to take advantage of lower labor costs, American factory workers lost jobs and faced wage pressure from global competition. This economic transformation undermined traditional labor unions and working-class communities, creating conditions for political realignment. The other options are historically inaccurate: income taxes were reduced but not abolished (B), the government did not nationalize major industries (C), there was no constitutional amendment requiring union membership (D), and suburban growth actually continued during this period (E).

Question 14

In 2015, the Supreme Court decision in Obergefell v. Hodges required states to recognize same-sex marriage, following decades of LGBTQ activism and shifting public opinion. Which change was most directly caused by this ruling?

States were required to issue marriage licenses to same-sex couples nationwide (correct answer)
Congress immediately passed a constitutional amendment banning same-sex marriage
The Supreme Court eliminated all state regulation of marriage age and consent
Same-sex couples were barred from adopting children in every state
Civil unions replaced marriage as the only legal status recognized by states

Explanation: The 2015 Obergefell v. Hodges Supreme Court decision ruled that state bans on same-sex marriage violated the Fourteenth Amendment's equal protection and due process clauses. This culminated years of LGBTQ activism, legal challenges, and evolving public attitudes toward marriage equality. Directly, it required all states to issue marriage licenses to same-sex couples and recognize such marriages nationwide. The ruling built on prior cases like Lawrence v. Texas and United States v. Windsor. It marked a milestone in civil rights expansion. In Period 9, this judicial causation highlights how court decisions can drive social change.

Question 15

During the 1990–1991 Gulf War and later conflicts in the Middle East, U.S. leaders cited securing oil supplies, maintaining regional stability, and enforcing international norms as key goals. These commitments continued after the Cold War ended, alongside new concerns about terrorism. Which broader development was most directly caused by these post-1990 military engagements?

A sustained U.S. military presence and repeated interventions in parts of the Middle East (correct answer)
A complete withdrawal of U.S. forces from overseas bases worldwide
The end of U.S. reliance on alliances such as NATO
A constitutional prohibition on deploying troops without a national referendum
A permanent end to debates over energy policy and oil imports

Explanation: Post-Cold War U.S. military engagements, starting with the 1990-1991 Gulf War to liberate Kuwait, emphasized protecting oil interests, regional stability, and countering threats like terrorism. Subsequent interventions in Iraq, Afghanistan, and elsewhere involved long-term troop deployments and alliances. This directly resulted in a sustained U.S. military presence and repeated interventions in the Middle East, shaping foreign policy. Concerns over energy security and global norms drove these commitments. Debates arose over costs and effectiveness. In Period 9, this causation reflects America's evolving role in international affairs.

Question 16

Secondary histories of health policy in the 2000s–2010s often argue that rising health-care costs, the problem of uninsured Americans, and partisan conflict shaped the push for the Affordable Care Act (2010). After passage, the law expanded Medicaid in participating states, created insurance marketplaces, and contributed to higher insurance coverage rates, though legal challenges and state-level decisions produced uneven outcomes. Which choice best states a cause-and-effect relationship described here?

Concerns about costs and coverage helped drive passage of the ACA, which in turn expanded access to insurance, though implementation varied by state and politics. (correct answer)
The ACA caused the United States to adopt a single-payer system immediately in 2010.
Rising health-care costs caused Congress to abolish all private insurance companies in the 1990s.
Legal challenges to the ACA caused health insurance coverage to drop to zero nationwide by 2012.
State decisions about Medicaid expansion were caused primarily by the Homestead Act.

Explanation: This question examines the causes and effects of the Affordable Care Act (ACA). Rising healthcare costs and millions of uninsured Americans created political pressure for healthcare reform, leading to the passage of the ACA in 2010. The law expanded Medicaid eligibility and created insurance marketplaces, increasing the number of Americans with health insurance. However, implementation varied significantly because some states chose not to expand Medicaid, and political opposition led to ongoing legal challenges. Option A correctly identifies this causal chain: healthcare concerns drove ACA passage, which expanded coverage, though with uneven implementation. The other options contain factually incorrect statements about healthcare policy.

Question 17

Secondary-source excerpt (Period 9, 1980–present): After the 9/11 attacks, the federal government expanded surveillance and counterterrorism powers through new laws and agencies. Proponents argued these steps were necessary to prevent future attacks, while opponents warned that broad authorities could erode civil liberties. In the following years, controversies over airport security, data collection, and executive power shaped public debates about the balance between safety and constitutional rights.

Which option best explains a cause of the political debates described in the excerpt?

The expansion of counterterrorism and surveillance authorities after 9/11 raised concerns about civil liberties. (correct answer)
The repeal of New Deal programs after 2001 eliminated debates about executive power.
The end of the Cold War directly caused the creation of airport security screening in the 2010s.
The Supreme Court's decision in Brown v. Board of Education caused post-9/11 surveillance controversies.
The rise of isolationism after 2001 ended federal involvement in counterterrorism.

Explanation: The excerpt explains that after 9/11, the federal government expanded surveillance and counterterrorism powers, which then caused political debates about balancing safety with constitutional rights. The expansion of these authorities was the direct cause of concerns about civil liberties, as opponents worried about the erosion of constitutional protections. Option A correctly identifies this causal relationship between expanded powers and civil liberties concerns. The other options are historically inaccurate: B mentions repealing New Deal programs (unrelated to 9/11), C incorrectly links the Cold War's end to airport security, D connects Brown v. Board to surveillance (wrong era and issue), and E claims isolationism rose after 2001 (the opposite occurred).

Question 18

In 2008, a collapse in housing prices and failures in mortgage-backed securities contributed to a major financial crisis. Credit tightened, unemployment rose, and the federal government responded with bank rescues and a large economic stimulus in 2009. Which policy response was most directly caused by the crisis described?

The immediate abolition of the Federal Reserve System
Passage of large-scale federal interventions to stabilize financial markets and spur recovery (correct answer)
A return to the gold standard to prevent future recessions
A federal ban on homeownership in favor of public housing
The end of federal regulation of securities markets

Explanation: The 2008 financial crisis stemmed from a housing bubble burst, risky lending, and complex financial instruments, leading to bank failures and a credit freeze. Unemployment spiked, and economic output contracted sharply. In response, the federal government enacted measures like the Troubled Asset Relief Program (TARP) and the American Recovery and Reinvestment Act for bailouts and stimulus. This directly caused the passage of large-scale federal interventions to stabilize markets and promote recovery. These actions echoed New Deal-era responses but focused on modern finance. In Period 9, this causation shows how economic crises prompt government activism.

Question 19

Secondary source excerpt (Period 9, 1980–present): As partisan polarization increased in the late twentieth and early twenty-first centuries, elected officials relied more heavily on ideologically aligned media and donor networks. The excerpt argues that this feedback loop rewarded uncompromising rhetoric, making bipartisan compromise rarer and increasing the likelihood of government shutdowns and legislative gridlock. In this interpretation, structural incentives pushed politicians toward strategies that intensified conflict. Which choice best states the central causation argument in the excerpt?

Bipartisan compromise caused increased polarization by eliminating ideological media outlets.
Polarization and aligned media/donor incentives contributed to gridlock and shutdown threats. (correct answer)
The excerpt argues that polarization ended campaign fundraising in the United States.
The New Deal coalition directly caused twenty-first-century government shutdowns.
The excerpt claims that gridlock caused the creation of donor networks in the 1970s.

Explanation: This question addresses how partisan polarization created a feedback loop affecting governance. The excerpt describes how politicians increasingly relied on ideologically aligned media and donor networks, which rewarded uncompromising rhetoric and made bipartisan compromise rarer. Option B correctly identifies this causation: polarization and aligned media/donor incentives → gridlock and shutdown threats. Option A reverses the relationship, option C incorrectly claims polarization ended fundraising, option D anachronistically links the New Deal to modern shutdowns, and option E reverses the temporal sequence. The passage emphasizes how structural incentives in the political system intensified conflict and reduced cooperation.

Question 20

Secondary source excerpt (Period 9, 1980–present): After the terrorist attacks of September 11, 2001, policymakers expanded surveillance authorities and created new security institutions, arguing that preventing future attacks required faster information-sharing and broader monitoring powers. Civil liberties groups countered that these measures increased the risk of government overreach and profiling. The excerpt highlights how fear of further attacks shaped domestic policy choices in the early 2000s. Which choice best states the causation claim emphasized in the excerpt?

Concerns about terrorism after 9/11 helped drive expanded federal surveillance and security policy. (correct answer)
The Vietnam War directly caused the creation of the Department of Homeland Security in 2002.
The rise of the Internet in the 1990s ended federal interest in intelligence gathering.
Watergate caused Congress to permanently eliminate executive power in national security matters.
The excerpt argues that civil liberties groups caused the expansion of surveillance powers.

Explanation: This question examines the causal relationship between 9/11 and changes in U.S. security policy. The excerpt clearly states that terrorist attacks led policymakers to expand surveillance authorities and create new security institutions, driven by fear of future attacks. Option A accurately captures this causation: concerns about terrorism → expanded federal surveillance and security policy. Option B incorrectly links Vietnam to the Department of Homeland Security, option C contradicts the passage about Internet and surveillance, option D misrepresents Watergate's impact, and option E reverses the causation by suggesting civil liberties groups caused surveillance expansion. The passage emphasizes how security fears shaped policy responses.