It had mostly a psychological effect. The first US troops only arrived at the front some 6 months before the end of the war, when the other Allies were already succesfully pushing back the German lines. The US troops moreover were untried in battle, while the French and British forces consisted of battle-hardened veterans.
But the US forces arrived at a time when German resources were drying up and German front soldiers' losses could no longer be replaced. Both parties knew that the Allies now would be able to relieve and replace their troops almost indefinitely and that the Germans simply would be overwhelmed in the end.
The sinking of the Lusitania a British luxury liner with American weapons and Americans bound for Britain by the Germans was the excuse the US administration used to enter WW1
Russia dropped out of the war
6 cents
Served in ww1 Writing Mein Kampf Entry into politics Become leader of Nazi Germany
The radio help made it possible to communicate information and entertainment in the time of peace.
ask your self
To answer a question we need a who, what, when, where, or how. Your question needs a when.
1917
Most probably, you are referring to an alliance between Mexico and Germany during WW1. It was Arthur Zimmerman, German ambassador in Mexico. His "Zimmerman note" was intercepted by British intelligence and forwarded to the American government, hastening American entry into WW1.
help your self
nationalism
swiper kept swiping her stuff!
WW1
Jeannette Rankin
American Troops
The sinking of the Lusitania a British luxury liner with American weapons and Americans bound for Britain by the Germans was the excuse the US administration used to enter WW1
The outbreak of WW1 turned the attention the American people and resources of the federal government to emergency wartime measures and Progressivism essentially ended.