All countries that were part of the Allies were an all of the U.S.
us, england, russia
* France * British * Russia
Great Britain and Canada.
USA and Soviet Union.
The US and the Allies won World War 2.
The countries that formed the principal allies of the US before World War 2 were China, France, Britain, Poland, The Netherlands, Portugal, Yugoslavia, and the Soviet Union (U.S.S.R). These countries were up against the Axis Powers. (Germany, Italy, Japan)
France and England, the Allies, later joined by the US
There were many others. After all, it was a World war. Other countries aligned with the Allies included Mexico, Polish Government In Exile, Bulgaria, Greece, Tibet and so on.
All countries that were part of the Allies were an all of the U.S.
The same as in World War I : the Allies consisting of the Free French, the USSR, the UK, and the other Commonwealth countries.
The US joined the war on the side of the Allies on April 6, 1917.