What impact did World War I have on U.S. imperialism?

World War I significantly marked a shift in U.S. foreign policy, leading to greater involvement in global affairs. Before the war, America had maintained a more isolationist approach, primarily focused on continental interests and limited overseas engagement. However, the war highlighted the importance of international alliances and the need for the United States to play an active role in world affairs.

The experiences and consequences of the war pushed the U.S. into a position where it became one of the principal actors on the global stage. This transition was underscored by U.S. participation in the League of Nations discussions and the subsequent shaping of post-war treaties, which reflected a commitment to international collaboration and diplomacy. Additionally, the war amplified America's economic and military power, allowing it to pursue interests that aligned with its imperial ambitions, such as expanding influence in territories affected by the war and establishing a presence in Europe and Asia.

Thus, the impact of World War I on U.S. imperialism was one of increasing involvement in global affairs, setting the stage for a more assertive American foreign policy in the decades that followed.