Conducting World War I Practice Test

By 1915, Britain’s naval blockade restricted goods entering Germany, while Germany responded with submarine warfare against merchant shipping. Both strategies aimed to weaken the enemy’s ability to sustain armies by targeting supplies, finance, and civilian morale. Neutral states complained that trade and passenger travel were increasingly dangerous, and incidents at sea influenced public opinion, especially in the United States. In this context, which development most directly increased the likelihood of United States entry into World War I?

World War I aircraft began as reconnaissance platforms, spotting enemy positions and directing artillery fire. As the war continued, planes were armed, leading to dogfights and later bombing raids against rail yards and cities. Based on this development, which statement best characterizes the changing conduct of World War I?