Germany and Japan.
The Triple Entente
There was no Olympics during World War 2, they were all canceled so no countries participated.
They were mainly Germany , Italy and Japan.
No, the Japanese and the United States have only fought during the Second World War.
No. America fought against the Germans.
Many countries declared war, but here are some countries that fought. America, Russia, Britain, France, Italy, and a few more.
Germany
The Axis countries. Namely Japan, Fascist Italy and Germany
The Triple Entente
Germany, Italy, and Japan
There was no Olympics during World War 2, they were all canceled so no countries participated.
The main 3 countries in the allies were America, England, and France. However, several countries in the world fought against Germany, Japan, and Italy.
America was not against any colonies during ww1 or ww2 but it was war in the colonies like the Arabic colonies and the North African Colonies
America did not attack China during WW2, in fact America helped China with men and supplies against the invading Japanese Army.
They were mainly Germany , Italy and Japan.
These two major countries are England and United States of America.
We do not know who you mean by saying America. America is several countries, some of which were neutral during WWI. Nor do you state who you are. It is therefore impossible to answer your question.