WWI+acs

Despite more than 40 years of general peace, tensions between european nations were building in 1914 throughout the late 1800's and early 1900's a number of factors created problems among the powers of europe and set the stage for a monumental war. Militarism,alliances,imperialism, and nationalism led to World War 1 in europe. Attacks on U.S. ships and american support for the allies eventually caused the United States to enter the war.