During World War 1, the U.S. government took unprecedented steps to mobilize resources and public support for the war effort. This included establishing new government agencies to oversee war production, food and fuel rationing, propaganda campaigns, and censorship of anti-war speech. It also led to economic growth and social changes like the migration of black workers to industrial jobs in the North. However, these wartime measures also undermined civil liberties and led to a post-war "Red Scare" targeting radical groups.