hard question to answer.
soviet Russia contributed the most to the defeat of Germany and some people claim they could have have defeated German basically singlehandely, given their huge armed forces and forbidable fighting power. could they? possibly
It's worth remembering that the biggest contribution of the US was resources. they supplied the Soviet Union with weapons, clothing, vehicles and food but there is debate as to how important this policy was.
North America, Europe, and Africa
japan america europe britain
Asia, North and South America, Europe, Australia and Africa were all involved in World war 1.
North America and Europe, Australia also Asia, that is why it was called a "World War". There was also some fighting in Africa.
WW1 was called a world war, because in effected and involved most, if not all of the countries in Europe, Australia, some of Africa, and America. The major powers in the war can be defined as the axis (Germany, Italy, and Spain) and the Allies (France, England, and later America).
North America, Europe, and Africa
japan america europe britain
All of the continents, Europe, Asia, Africa, Australia, North America, and South America, with the exception of Antarctica, were involved in World War I.
Asia, North and South America, Europe, Australia and Africa were all involved in World war 1.
Because it was involved of the whole world at war, America, Europe, Asia, Oceanic and Africa had effects from the wars
It involved countries over the whole world. The empire of Great Britain alone included countries in Asia, Africa Europe and North America. France also was in Europe
It was a world war because it involved countries from different continents - Europe, North America, Africa, Asia, Australia.
North America and Europe, Australia also Asia, that is why it was called a "World War". There was also some fighting in Africa.
== == Of the 7 continents, only Antarctica was NOT involved in fighting in WW2. I'm sure what you meant to say was................What countries, on what continents, were involved in World War Two?
The 5 Continents of the World (except in USA) are : Asia, Africa, America, Oceania and Europe
Europe was involved by being near Germany and Germany wanted to eradicate everyone who were not of the "Aryan Race"
Europe was heavily involved in both wars, they were fought across Europe and killed millions there.