AP U.S. History Flashcards: World War I: Military and Diplomacy
Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026
Review key ideas with interactive flashcards. This set includes 10 cards to help you master important concepts.
What was the military impact of the American Expeditionary Forces in World War I?
Although their combat role was relatively limited, the entry of the AEF helped to tip the balance of the conflict in favor of the Allies.
Card 1 of 10
All Flashcards (10)
What was the military impact of the American Expeditionary Forces in World War I?
Although their combat role was relatively limited, the entry of the AEF helped to tip the balance of the conflict in favor of the Allies.
How did U.S. entry into World War I affect its traditional foreign policy?
It marked a significant departure from the nation's long-standing tradition of noninvolvement in European affairs and conflicts.
Describe the paradox of President Wilson's postwar diplomatic efforts.
Wilson was deeply involved in the postwar negotiations and the creation of the League of Nations, yet his own country's Senate rejected both the treaty and the league.
What was the initial U.S. policy regarding World War I?
The United States initially maintained a policy of neutrality, following its tradition of noninvolvement in European affairs.
According to Woodrow Wilson, what was the primary reason for the U.S. to enter World War I?
President Wilson called for entering the war in defense of humanitarian and democratic principles.
What was the U.S. Senate's final decision on the Treaty of Versailles?
Despite President Wilson's deep involvement in its negotiation, the U.S. Senate refused to ratify the Treaty of Versailles.
What were the American Expeditionary Forces (AEF)?
The AEF were the U.S. military forces sent to Europe during World War I.
How did U.S. involvement alter the balance of power in World War I?
The entry of the United States, with its fresh troops and resources, was decisive in tipping the military balance of the conflict in favor of the Allied powers.
What was a major consequence of the Senate's refusal to ratify the Treaty of Versailles?
A major consequence was that the United States did not join the League of Nations, undermining the international organization Wilson had championed.
What was the League of Nations?
The League of Nations was an international organization proposed after WWI to promote peace and cooperation, which the U.S. ultimately did not join.