for the first part they were nutral.(not chosing a side or even fighting.)
Isolationism
The answer you seek is isolationism. This is the policy of not forming alliances.
The foreign weapons policy.
Before World War One, the United States of America had an isolation policy. This meant that they did not involve themselves in any international affairs or wars. However after World War One, there was a massive shift in their policy and they eliminated their isolation policy.
The Cold War.
This is called neutrality.
The US reverted back to the Uniform Time Act until the Second World War
The answer you seek is isolationism. This is the policy of not forming alliances.
The u.s policy during the first world war was policy of isolation
The foreign weapons policy.
After World War I, the US was plunged into the Great Depression. In order to protect its economy and physical security, they had to participate abroad.
World War 2.
the war affected it greatly
Before World War One, the United States of America had an isolation policy. This meant that they did not involve themselves in any international affairs or wars. However after World War One, there was a massive shift in their policy and they eliminated their isolation policy.
it is because of how the wars started
Policy of neutrality/ American neutrality
The Cold War.
Isolationism.