WW1

Economic Links with Britain and France
The British blockade prevented trade with Germany and President Woodrow Wilson tolerated British blockade while restricting Germany submarine blockade. United States trade was going to one side and not the other. United States government permitted J.P. Morgan and other bankers to extend loan and credit to Allies, he gave three billion dollars.
Public Opinion
Germany was perceived as a cruel bully. Ruthlessness of the German people was reinforced by the sinking of the Lusitania. Second generation immigrants backed the United States neutrality, yet they were sympathetic to their country of origin. German-Americans sympathized with the struggles of their homeland; Irish-Americans hated the British for their own reasons. Majority of native-born Americans wanted the Allies to win.
Propaganda
Allies controlled the transatlantic cable. This allowed Allies to promote the war as one of civilized democratic nations against the barbaric Germans. Effective uses of propaganda were films, posters, and slogans.
Mobilizing for War
Passage of the National Defense Act and Navy Act in 1916 began the expansion of the armed forces. May 1917, congress passed the Selective Service Act, providing for a draft. All males eighteen to forty-five had to register. 400,000 African American soldiers served in the war in segregated units. Many women served in the Red Cross and the Salvation Army. Over two million American served in France in a separate command, the American Expeditionary Force (AEF), under General John J. Pershing. Their effort tipped the scale in favor of the Allies. The United States lost about 51,000 men. The United States entered the war of the side of the Allies in April of 1917. They were poorly prepared for the war.

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