Who were the people involved in World War 2?

Allied Powers:

Soviet Union, United states, France, Britain, Yougoslavia, China (Communist and Nationalist), India, Poland, Belgium, Canada, Australia, Netherlands, Finland, Czechoslovakia, Greece, New Zealand, South Africa, Norway, Denmark, and Spain.

Axis Powers:

Germany, Japan, Italy, Romania, Bulgaria, and Hungary.

There are a total of 26 countries here. Truly it was a World War.

Just to note : Finland was a difficult one to categorise because of their war against Russia in which they were aided by the Nazis.... But it is not known as a supporter of the Axis... Oh, and Spain is definitely not Allied. It was neutral, but supported the Axis, at least in sentiment...