The major causes of WWI were Militarism, Alliances, Imperialism and Nationalism . The government silence critics of the war through Espionage & Sedition Acts.
The government did support the WWI by;
The US government also gather a lot of support for world war 1 (WW1). They did so by recruiting young men for service, civilians were asked to contribute their quota by buying War bonds, donating to charity etc.
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