World War I was not as consequential for the US as World War II, but it was important nonetheless. Among its effects were:
- It made the US more of an important world power. The fact that US participation swung the outcome of the war helped make the US a first rate power after the war.
- It also pushed the US towards isolationism. Many Americans felt that the war had been unnecessary and did not want to get involved with further foreign wars.
- It helped lead to intolerance in the US. This happened both during and after the war. During the war, propaganda helped create animosity towards Germans. After the war, there was a “red scare” that came about in part because of the war.
- It helped bring African Americans to the North. African Americans moved north to work in factories making war materiel. This started to change the African American experience.