It did not change until WWII.
France
usa
Switzerland remained neutral.
The u.s policy during the first world war was policy of isolation
The foreign weapons policy.
It was okay for us but there was a lot of fighting going on around the world at that time.
US Foreign Policy prior to US entry in World War I in 1917 was a policy of ISOLATIONISM and NEUTRALITY, with an official avoidance of heightened commerce with all parties involved in the war. However, Wilson intended to bring the US into the war on the side of the allies and covertly supported the British war effort. He did not make this official policy because entering the war would be incredibly unpopular.
dog
1914
Isolationism.
The United States suffered few casualties and was the richest nation in the world. The Soviet Union suffered enormous loss of life and damage to its cities.
The Cold War.