U.S. involvement in World War I

The U.S. involved itself in World War I primarily after observing its allies being overwhelmed and due to threats like German submarine attacks on American ships. Although initially neutral, political and economic ties to the Allies and a desire to ensure global stability drew the U.S. into the conflict in 1917. American forces helped turn the tide against Germany, contributing to the Allies' victory. The war also prompted major social and political changes at home, including increased government power and shifts in labor and societal roles.