the USA Joined the war in 1917
1944 when the USA joined the World War 2
Yes. Turkey was neutral in WW2 until several months before the war ended. They joined with the Allies. Turkey helped the Jewish people and let them live in their country until the end of the War.
it ended
it ended when the U.S. joined world war two
Germany
No country attacked the US before they joined WW1, but the US's allies such as France and Britain were attacked and at war with Germany, so the US decided to support their allies and join the war. The sinking of the British/ American ship "The Lusitania" was a trigger for the US to join the war.
The U.S. Entered the war and declared war on Germany in 1917 and the war ended at 1918
He was a world champion in ROH.
After the US joined WWI, the allies had the forces they need to triumph. The axis powers fell and the war ended.
the soviet union ended it when they won the battle of berlin in 1945.
Notably , Italy and japan .
As a part of the United Kingdom, it joined with its "Mother Country."