How did American involvement change world war 1

The American entry into WW1 changed the tide of the war in favor of the Allies.

Explanation: Before US entry the war was in a stalemate as both sides were suffering from war exhaustion from years of war. But when the fresh US expeditionary forces arrived in the trenches they quickly broke through the exhausted German lines.

the american colonists were happy with their vicorty, but the french were mad and the french and indians were not alies, and neither were the french and colonist. i think,