One of the major impacts of American intervention during World war 1 was an increase in American industrial output.
The United States had earlier remained neutral at the start of the war.
American support towards the war was mainly from individuals and it was in form of relief efforts such as voluntary ambulance drivers or nurses, or even as pilots and soldiers.
This intervention from America saw a great industrial output in order to meet the demand of their allies such as Great Britain and France.
Americans had been sympathetic to the allies and saw the German empire as the main oppressors in the war.
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