the US joined the war in 1917 and the war ended in 1918. Answer: 1 year.
The US did enter World War 1, though not till 1917.
World War 1, World War 2 and I think the Korean War too.
Switzerland has a long history of neutrality.
Italy
3 years =)
the US joined the war in 1917 and the war ended in 1918. Answer: 1 year.
2 years
one year
The US decided to remain neutral in this war, however this pact did not last long.
world war one affect the us they had get a alot of money
Germany fought the us in world war 1
The US helped France in world war 1 with submarines in the Atlantic.
in a world war 1 on the us ecompny all the american are died and and war is started 1941 to 1954 the american is won the war by us economy
Germany
japan
The US did enter World War 1, though not till 1917.