Continuity and Change in the 20th and 21st Centuries - AP European History

SECTION 1

Historical Context & Motivation

The twentieth century began with Europe at the zenith of its global power, commanding vast colonial empires and driving industrialization at an unprecedented pace. Yet within just a few decades, two catastrophic world wars dismantled the continent's political order, shattered empires, and fundamentally redefined the relationship between states and their citizens. The concept of continuity and change is central to understanding how certain European institutions, ideologies, and social patterns persisted across these upheavals while others were radically transformed or entirely replaced. Historians use this analytical framework to avoid the trap of viewing history as either a story of inexorable progress or one of total rupture; instead, both forces operate simultaneously, often in tension.

1914–1918 • World War I and the Collapse of Empires

The Great War destroyed the Ottoman, Austro-Hungarian, Russian, and German empires, redrawing the map of Europe and introducing the principle of national self-determination as a guiding ideology for state formation.

1945 • End of World War II and Bipolar Division

Europe lay devastated; the United States and Soviet Union emerged as rival superpowers, dividing the continent along ideological lines. The Iron Curtain separated capitalist Western Europe from communist Eastern Europe.

1957 • Treaty of Rome and European Integration

Six nations formed the European Economic Community, initiating a process of economic and political integration designed to prevent future wars and foster prosperity through shared governance.

1989–1991 • Fall of the Berlin Wall and Soviet Collapse

The sudden collapse of communist regimes in Eastern Europe and the dissolution of the Soviet Union ended the Cold War, reunified Germany, and opened the possibility for a broader European community.

2016–Present • Brexit and Challenges to Integration

The United Kingdom's departure from the European Union signaled rising populism, Euroscepticism, and migration anxieties that challenged the assumptions underlying decades of continental integration.

This lesson examines how certain structural features of European life—the nation-state system, market economies, democratic aspirations, and cultural identities—demonstrated remarkable continuity even as specific regimes, borders, and ideologies shifted dramatically. The central question is: What endured across the transformations of the twentieth and twenty-first centuries, and what was genuinely new?

SECTION 2

Core Principles: Analyzing Continuity and Change

To analyze continuity and change effectively on the AP European History exam, students must move beyond simple chronological narration and instead identify the underlying structures, institutions, and ideologies that either persisted or were disrupted over time. This requires evaluating both the agents of change—wars, revolutions, technological innovation, social movements—and the mechanisms of continuity, such as institutional inertia, cultural tradition, and the persistence of class structures. The following core principles provide an analytical framework for this task.

Periodization

Historians divide time into periods defined by dominant characteristics. Recognizing that periodization is an interpretive act—not a natural fact—allows you to argue that a given event represents either a genuine turning point or a superficial shift masking deeper continuities.

Structural vs. Contingent Change

Structural changes (e.g., the shift from agrarian to industrial economies) reshape entire societies over decades, while contingent changes (e.g., the assassination of Archduke Franz Ferdinand) trigger immediate but potentially reversible events. Strong essays distinguish between these scales.

Path Dependence

Decisions made at critical junctures constrain future possibilities. The post-1945 welfare state, for instance, reflected earlier Bismarckian social insurance models—an example of how institutional precedents channel later policy development even after radical political disruptions.

Agency and Resistance

Change does not simply happen to passive populations. Social movements—feminism, labor organizing, anti-colonial activism—actively drove transformation, while conservative forces, elite interests, and cultural norms resisted change and preserved existing hierarchies.

Uneven Development

Change occurs at different rates in different regions and across different social groups. Women in Scandinavian countries gained robust political rights decades before women in southern European nations did, illustrating how geography, religion, and economy mediate the pace of transformation.

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KEY TAKEAWAY

Think of European history like a river system. The river's overall direction (long-term structural trends such as democratization and economic modernization) continues flowing even when sudden storms (wars, revolutions) reshape the banks and redirect specific channels. A strong historical argument identifies both the persistent current and the storms that altered its course, explaining which changes were permanent diversions and which were temporary floods that receded to reveal the old channel.

SECTION 3

Visual Explanation: Europe's Political Transformations

This stacked bar chart illustrates the changing composition of European political systems across the twentieth and twenty-first centuries. Note how absolute monarchies (dominant in 1900) virtually disappeared by 1920, replaced by republics and constitutional monarchies. The post-1945 division between Western democracies and Soviet bloc states gave way to near-universal democracy by 2020, though a few hybrid or authoritarian regimes persisted.

The diagram above reveals several key patterns. The most dramatic change is the near-total elimination of absolute monarchy as a governing system—a transformation completed primarily by World War I, which toppled the Romanov, Habsburg, Hohenzollern, and Ottoman dynasties in quick succession. However, constitutional monarchy endured in states like Britain, the Netherlands, and Scandinavia, demonstrating that the institution of monarchy itself showed remarkable adaptability. Similarly, the post-1945 Cold War division appears as a sharp discontinuity, but beneath the ideological surface, older national identities and cultural patterns persisted within the Soviet bloc, re-emerging forcefully after 1989. The 2020 column shows a continent overwhelmingly democratic, yet the persistence of authoritarian or hybrid regimes in states like Russia and Belarus reminds us that the trajectory toward liberal democracy is neither universal nor irreversible.

SECTION 4

Mechanisms of Continuity and Change

How Change Operates: Wars, Revolutions, and Structural Shifts

The mechanisms by which European societies changed—or resisted change—in the twentieth century can be grouped into several categories. Exogenous shocks such as wars and economic crises disrupted existing institutions and created openings for radical political movements. The devastation of World War II, for example, discredited fascism and created the conditions for American-backed reconstruction through the Marshall Plan (1948), which funneled approximately $13 billion into Western European economies. This external intervention accelerated the adoption of mixed economies combining capitalist markets with robust welfare states—a pattern that represented genuine change in the scope of government intervention, yet also drew on pre-war precedents like Bismarck's social insurance programs in Germany and Beveridge-style social planning in Britain.

How Continuity Operates: Institutional Inertia and Cultural Persistence

Continuity is sustained through several interrelated mechanisms. Institutional inertia means that bureaucratic structures, legal codes, and administrative practices often survive regime changes; France's centralized administrative system, rooted in Napoleonic reforms, persisted through the Third Republic, Vichy, and the Fifth Republic with remarkable consistency. Cultural persistence refers to the durability of religious identities, linguistic communities, and social norms that resisted political efforts to transform them; Poland's Catholic identity survived decades of communist rule and re-emerged as a powerful political force after 1989. Finally, elite reproduction—the tendency of social and economic elites to maintain their positions even through political revolutions—ensured that class structures in many European societies showed surprising durability across the century.

This flowchart shows how agents of change and mechanisms of continuity interact to produce the complex historical outcomes visible in modern Europe. Each outcome—the welfare state, European integration, persistent nationalism—reflects both forces operating in combination.

SECTION 5

Thematic Breakdown: Key Areas of Continuity and Change

AP European History organizes analysis around several thematic areas. The table below systematically examines how continuity and change operated within each theme across the twentieth and twenty-first centuries, providing the kind of thematic comparison that forms the backbone of successful essays.

Theme	Key Continuity	Key Change	Illustrative Evidence
Political Governance	The nation-state remained the primary unit of political organization throughout the century.	Authoritarian systems (fascism, communism) rose and fell; supranational governance (EU) emerged.	Maastricht Treaty (1992); persistence of national parliaments within the EU framework.
Economic Systems	Market economies persisted in Western Europe despite wartime command economics.	The welfare state expanded massively; then neoliberal reforms from the 1980s partially rolled it back.	Thatcher's privatization (1979–1990); French dirigisme; Scandinavian social democracy.
Social Structures	Class-based hierarchies persisted despite rhetoric of classlessness in communist states.	Women gained legal equality; immigration transformed demographic composition.	Simone de Beauvoir's The Second Sex (1949); guest worker programs in West Germany.
Technology & Science	European states continued to invest in science as a tool of national power.	Nuclear weapons, the space race, and the digital revolution transformed daily life and geopolitics.	CERN's founding (1954); internet adoption in the 1990s.
Cultural Identity	National and ethnic identities remained potent mobilizing forces.	Secularization accelerated; consumerist culture and Americanization reshaped cultural norms.	Decline of church attendance in Western Europe; rise of multicultural cities like London and Berlin.

Thematic comparison of continuity and change across major AP European History themes

Notice how each theme contains both elements. When writing AP essays, resist the temptation to characterize a period as purely one of continuity or purely one of change. The most sophisticated arguments identify the interplay between the two, explaining not only what changed but also what persisted and why. For instance, the European Union represents a genuinely novel supranational institution (change), yet its member states retain sovereignty over foreign policy and taxation (continuity), creating an ongoing tension that shapes contemporary European politics.

SECTION 6

Worked Example: Constructing a Continuity and Change Argument

The following worked example walks through the process of developing a thesis and supporting argument for a typical AP European History essay prompt dealing with continuity and change.

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SAMPLE PROMPT

Evaluate the extent to which the political landscape of Europe changed in the period 1945–2000.

Building a Continuity and Change Argument

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Step 1 — Identify the Categories of Analysis

Before writing, brainstorm what "political landscape" encompasses: forms of government (democracy, authoritarianism), international alliances (NATO, Warsaw Pact), supranational institutions (EU), ideological movements (communism, liberalism, nationalism), and the role of individual states in the international order. Organizing your thinking by category prevents a merely chronological narrative.
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Step 2 — Draft a Thesis That Addresses Both Continuity and Change

A strong thesis must take a clear evaluative position. Avoid vague claims like "there were many changes and continuities." Instead, argue for relative weight.

Sample Thesis: Although the political landscape of Europe underwent dramatic transformation between 1945 and 2000—most notably the collapse of communist regimes and the rise of the European Union—the nation-state remained the fundamental unit of political identity and decision-making, demonstrating that structural continuity underlay even the most radical surface changes.
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Step 3 — Select Specific Evidence for Change

Choose 2–3 pieces of precise evidence to support the "change" side. For example: (1) the division of Germany into East and West in 1949, symbolizing the Cold War's reshaping of the European map; (2) the fall of the Berlin Wall in 1989 and subsequent reunification of Germany; (3) the Maastricht Treaty of 1992, which created the European Union and established a framework for shared currency and political cooperation unprecedented in European history.
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Step 4 — Select Specific Evidence for Continuity

Choose 2–3 pieces of evidence for the "continuity" side: (1) Britain, France, and other Western European states maintained parliamentary democratic systems throughout the period, adapting but not fundamentally replacing pre-war institutional structures; (2) nationalism persisted as a political force—visible in de Gaulle's insistence on French sovereignty during the 1960s and in the ethnic conflicts of the 1990s Balkans; (3) Eastern European nations that emerged from communism after 1989 largely returned to nation-state frameworks and democratic aspirations rooted in pre-communist traditions.
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Step 5 — Analyze Causation and Synthesize

Connect the evidence to your thesis by explaining why continuities persisted despite dramatic changes. The nation-state endured because it remained the primary vehicle for democratic legitimacy and cultural identity. Even the EU, which represented the most significant political innovation of the period, relied on the voluntary cooperation of sovereign states and was repeatedly constrained by national interests—as shown by Britain's Euroscepticism and France's rejection of the European Constitution in 2005.

Key analytical move: Argue that the changes were real but operated within the enduring framework of the nation-state, making continuity the deeper structural reality.

SECTION 7

Comparing Perspectives: Western vs. Eastern Europe

One of the most important analytical distinctions within this topic is the divergent experiences of Western and Eastern Europe during the Cold War and after. While both halves of the continent experienced profound changes, the nature, timing, and degree of transformation varied dramatically.

Dimension	Western Europe	Eastern Europe
Political Systems (1945–89)	Stable liberal democracies; gradual expansion of suffrage and civil rights.	Soviet-imposed one-party communist states; suppression of dissent (Hungary 1956, Prague Spring 1968).
Economic Development	Marshall Plan → mixed economies → welfare states → neoliberal reforms.	Centrally planned economies → stagnation by 1970s → painful market transitions after 1989.
Integration	EEC → EC → EU; deepening integration through trade, law, and currency.	COMECON and Warsaw Pact → dissolution → EU accession for many states (2004, 2007).
Social Change	Sexual revolution; feminism; secularization; immigration and multiculturalism.	State-imposed equality rhetoric masked persistent gender and ethnic hierarchies; religious revival after 1989.
Post-1989 Trajectory	Continued deepening of EU; debate over fiscal union and migration.	"Shock therapy" vs. gradual reform; democratic backsliding in Hungary and Poland; Russian authoritarianism.

Comparative analysis of Western and Eastern European trajectories, 1945–present

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KEY TAKEAWAY

The Cold War division of Europe can be compared to a controlled experiment in political science, where two halves of a continent with shared cultural roots were subjected to radically different political and economic systems for four decades. When the experiment ended in 1989, both the persistence of underlying national identities (continuity) and the deep scars of divergent development (change) were revealed simultaneously. Strong AP essays use this East-West comparison as a powerful analytical lens.

SECTION 8

Continuity and Change in the 21st Century

The twenty-first century has introduced new challenges that simultaneously reinforce and test the patterns established in the twentieth century. Understanding how contemporary developments connect to longer historical trajectories is essential for the AP exam, which increasingly asks students to draw connections to the present.

20th Century Pattern	21st Century Continuation	21st Century Disruption
European integration deepens	Euro currency; Schengen Area; EU expansion to 27 members.	Brexit (2016–2020); Eurozone debt crisis (2010); rise of Eurosceptic parties.
Welfare state expansion	Universal healthcare and education remain core commitments across most European states.	Austerity measures after 2008 crisis; debates over sustainability of generous welfare in aging societies.
Post-Cold War peace	NATO and EU structures continue to provide collective security frameworks.	Russia's annexation of Crimea (2014) and invasion of Ukraine (2022) shattered assumptions about post-Cold War stability.
Secularization	Church attendance continues to decline across most of Western Europe.	Immigration from Muslim-majority countries has raised new debates about religion in the public sphere.

How 21st-century developments extend or challenge 20th-century patterns

The most significant implication of these developments is that the narrative of inevitable European convergence toward liberal democracy and deeper integration—sometimes called the "end of history" thesis associated with Francis Fukuyama—has been significantly challenged. Russia's military aggression, the rise of illiberal democracies in Hungary and Poland, and the migration crises of 2015 onward have demonstrated that the forces of change can operate in multiple directions, including what might be termed regressive change—movement away from democratic norms that many had assumed were irreversibly established. At the same time, the EU's coordinated response to Russia's invasion of Ukraine in 2022 demonstrated the continued vitality and adaptability of European institutional cooperation.

SECTION 9

Practice Problems

Question 1: CONCEPTUAL

Which of the following best illustrates the concept of continuity in European political history during the twentieth century?

A. The creation of the European Economic Community in 1957
B. The persistence of the nation-state as the primary unit of political organization despite supranational integration
C. The fall of communist regimes across Eastern Europe in 1989
D. The adoption of the euro as a common currency in 1999

Show answer (B)

B is correct because continuity refers to elements that persist over time despite other changes. The nation-state remained the fundamental unit of European political life throughout the century, even as supranational institutions like the EU were built around it. A is incorrect because the EEC represented a novel institutional development—a change. C is incorrect because the fall of communism was one of the most dramatic political changes of the century. D is incorrect because adopting a shared currency represented a significant departure from traditional national monetary sovereignty.

Question 2: BASIC

A historian argues that the welfare states established in Western Europe after 1945 represented "change within continuity." Which of the following pieces of evidence would best support this interpretation?

A. Britain's National Health Service was created in 1948 with no precedent in British social policy.
B. Germany's post-war social insurance system built upon and expanded Bismarck-era programs from the 1880s.
C. The Soviet Union imposed centrally planned economies on Eastern European states after 1945.
D. The United States provided billions of dollars in Marshall Plan aid to reconstruct Western Europe.

Show answer (B)

B is correct because it directly illustrates the concept of "change within continuity"—the post-war welfare state represented a significant expansion (change) but was built upon institutional foundations laid in the late nineteenth century (continuity). This is a textbook example of path dependence. A is incorrect because it is factually misleading (Britain had pre-war precedents including National Insurance) and because it frames the NHS as entirely new, contradicting the "continuity" element. C is incorrect because Soviet economic imposition on Eastern Europe is a separate topic from Western welfare states and represents externally driven change. D is incorrect because while the Marshall Plan facilitated reconstruction, it describes American intervention rather than internal European institutional continuity.

Question 3: INTERMEDIATE

3 pts

Answer parts (a), (b), and (c). (a) Identify ONE specific example of political change in Europe during the period 1945–2000. (b) Identify ONE specific example of political continuity in Europe during the same period. (c) Explain how the relationship between the change and the continuity you identified reveals the complexity of European political development in this period.

Show answer

RUBRIC (3 points): Point 1 — Identification of Change (1 point): Award 1 point for identifying a specific, historically accurate example of political change, such as the fall of the Berlin Wall and German reunification (1989–1990), the creation of the European Union through the Maastricht Treaty (1992), or the collapse of communist regimes across Eastern Europe. Point 2 — Identification of Continuity (1 point): Award 1 point for identifying a specific, historically accurate example of continuity, such as the persistence of the nation-state system, the survival of parliamentary democracy in Western European states throughout the period, or the enduring significance of national identities even within the EU framework. Point 3 — Explanation of Relationship (1 point): Award 1 point for an explanation that connects the change and continuity in a meaningful analytical way. For example, a student might argue that while the fall of communism in Eastern Europe (change) fundamentally altered the ideological map of the continent, the states that emerged from this transformation largely reverted to national frameworks rooted in pre-communist identities (continuity), demonstrating that the communist period was in some respects a forced interruption of longer-term patterns rather than a permanent transformation. The explanation must go beyond mere juxtaposition and identify a causal, structural, or analytical relationship.

Question 4: APPLIED

4 pts

Using the following two documents, answer parts (a) through (d). Document 1: Excerpt from the Schuman Declaration (1950): "World peace cannot be safeguarded without the making of creative efforts proportionate to the dangers which threaten it. The contribution which an organized and living Europe can bring to civilization is indispensable to the maintenance of peaceful relations... Europe will not be made all at once, or according to a single plan. It will be built through concrete achievements which first create a de facto solidarity." Document 2: Excerpt from a speech by Viktor Orbán, Prime Minister of Hungary (2014): "The new state that we are building is an illiberal state, a non-liberal state. It does not deny foundational values of liberalism, as freedom, etc. But it does not make this ideology a central element of state organization, but applies a specific, national, particular approach in its stead." (a) Identify the historical context for Document 1. (b) Explain how Document 2 represents a challenge to the vision articulated in Document 1. (c) Using the documents and your knowledge of European history, identify ONE element of continuity in European political development from 1950 to 2014. (d) Using the documents and your knowledge of European history, identify ONE element of change in European political development from 1950 to 2014.

Show answer

RUBRIC (4 points): Point 1 — Contextualization (1 point): Award 1 point for accurately identifying the historical context of Document 1. The Schuman Declaration was issued in the aftermath of World War II, during the early Cold War, when European leaders sought to prevent future wars by binding together the economies of France and Germany. Specifically, it proposed pooling French and German coal and steel production under a supranational authority, leading to the European Coal and Steel Community (1951) and eventually the EU. Point 2 — Analysis of Challenge (1 point): Award 1 point for explaining how Orbán's "illiberal state" concept challenges the Schuman vision. While Schuman envisioned a Europe unified through shared institutions and liberal democratic values, Orbán explicitly rejects liberal ideology as the organizing principle of governance and asserts national particularism over supranational solidarity. This represents a direct challenge to the assumption—central to the European integration project—that democratization and liberalization would converge across the continent. Point 3 — Continuity (1 point): Award 1 point for identifying a valid continuity. For example: the persistence of the nation-state as the primary vehicle for political identity and legitimacy. Even Schuman acknowledged that Europe would "not be made all at once," implicitly recognizing the enduring power of national sovereignty. Orbán's speech 64 years later demonstrates that national identity and state sovereignty remain potent organizing principles, confirming this continuity. Point 4 — Change (1 point): Award 1 point for identifying a valid change. For example: the shift from a consensus around liberal democratic values as the foundation of European cooperation (implicit in Schuman's vision and explicit in EU membership criteria like the Copenhagen Criteria of 1993) to the emergence of explicitly illiberal democratic models within the EU itself. Hungary's trajectory from a post-communist state eagerly seeking EU membership to a state whose leader openly challenges liberal norms represents a significant transformation in the meaning and limits of European integration.

Question 5: CRITICAL THINKING

6 pts

Evaluate the extent to which the end of the Cold War in 1989–1991 represented a turning point in European social and cultural life. Develop an argument that evaluates the extent to which the end of the Cold War marked a fundamental transformation in European social and cultural patterns versus the extent to which it revealed pre-existing continuities. Your essay should include a historically defensible thesis, specific evidence, and analysis that considers both change and continuity.

Show answer

RUBRIC (6 points): Point 1 — Thesis/Claim (1 point): Award 1 point for a thesis that makes a historically defensible claim evaluating the extent to which the end of the Cold War was a turning point in European social and cultural life. The thesis must address both change and continuity and take a clear evaluative position. Example: "While the end of the Cold War triggered immediate and visible social transformations in Eastern Europe—including religious revival, consumer culture, and new migration patterns—many of these developments represented the resurfacing of pre-existing cultural identities suppressed under communism rather than genuinely novel phenomena, suggesting that 1989 was more a moment of revelation than creation." Point 2 — Contextualization (1 point): Award 1 point for situating the argument within the broader context of European social and cultural history. Students might discuss the social effects of the Cold War division (state atheism in the East, consumer culture in the West, restricted migration), the broader trajectory of secularization and globalization, or the legacy of pre-war national and ethnic identities. Point 3 — Evidence for Change (1 point): Award 1 point for providing at least two specific pieces of evidence supporting the argument for change. Examples include: the rapid spread of Western consumer culture into Eastern Europe; the migration of Eastern Europeans westward after borders opened; the eruption of ethnic conflict in Yugoslavia as communist structures that had suppressed nationalist tensions collapsed; the cultural dislocation caused by economic "shock therapy" in Russia and Poland. Point 4 — Evidence for Continuity (1 point): Award 1 point for providing at least two specific pieces of evidence supporting the argument for continuity. Examples include: the revival of Catholic identity in Poland, which had persisted throughout the communist period (as demonstrated by the election of Pope John Paul II in 1978); the persistence of secularization trends in Western Europe that continued unbroken from before the Cold War through its aftermath; the endurance of national literary and artistic traditions in both Eastern and Western Europe. Point 5 — Analysis and Reasoning (1 point): Award 1 point for using reasoning to corroborate or qualify the thesis. Students must do more than list evidence; they must explain how the evidence supports their argument. For example, analyzing how the rapid re-emergence of religious practice in Poland after 1989 suggests that communist-era secularization policies never truly transformed Polish cultural identity, supporting the "continuity" interpretation. Point 6 — Complex Understanding (1 point): Award 1 point for demonstrating a nuanced understanding that might include: acknowledging that the turning point was more significant in some areas (consumer culture, migration) than others (national identity, religious practice); making connections to other historical periods or regions; or qualifying the argument by distinguishing between different social groups or geographic areas that experienced the end of the Cold War differently.

SUMMARY

Summary: Continuity and Change in the 20th and 21st Centuries

Summary

The twentieth and twenty-first centuries in Europe were defined by the interplay of profound political transformation—including the collapse of empires, the rise and fall of totalitarian regimes, the Cold War division, and the project of European integration—and remarkable structural continuities, including the persistence of the nation-state, market economies, national identities, and class-based social hierarchies. Effective analysis on the AP exam requires students to identify both dimensions, use specific evidence to support claims, and explain why certain patterns endured while others were disrupted.

Key analytical tools include periodization (recognizing that turning points are interpretive, not natural), path dependence (earlier decisions constrain later outcomes), and the distinction between structural and contingent change. The strongest essays will argue for the relative significance of one force over the other—while acknowledging both—and will draw on specific evidence from across the century, including the East-West comparison during the Cold War, the trajectory of welfare state development, and 21st-century challenges like Brexit, democratic backsliding, and the migration crisis.