Problem: Explain the reasons for American entry into World War I and World War II. In your answer, describe and analyze the political, military, economic, and ideological factors that influenced the decision to enter the wars, how the U.S. mobilized, the experiences of Americans on the homefront, and assess the effects of the wars on American society, politics, economics, and culture. Do you think either war (or both wars) constituted a turning point in American foreign (and/ or domestic) policy, and why or why not?