Positive effects:
- The United States emerged from the war as a major global power.
- The war helped to spur economic growth in the United States, as the country supplied food and munitions to the Allied powers.
- The war also led to the development of new technologies, such as the airplane and the tank.
- The war helped to create a sense of national identity and unity in the United States.
Negative effects:
- The war led to the deaths of over 100,000 American soldiers.
- The war also left many American soldiers wounded and disabled.
- The war caused widespread economic disruption in the United States, as the country shifted from a peacetime to a wartime economy.
- The war also led to increased social tensions in the United States, as different groups competed for resources and opportunities.
Overall, World War 1 had a mixed impact on the United States. While the war brought some benefits, it also caused significant hardships.