The Palmer Raids were a series of raids conducted in November 1919 and January 1920 during the First Red Scare by the United States Department of Justice under the administration of President Woodrow Wilson to capture and arrest suspected radical leftists, mostly Italian and Eastern European immigrants and especially anarchists and communists, and deport them from the United States.
There are several ways in which nationalism, imperialism, and militarism helped set the stage for World War I, but it general it made each European country feel that it was superior to the others.
