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.

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939

a direct vote in which an entire electorate is invited to vote on a particular proposal. this may result in the adoption of a new law.