Answer:
The reason why WWII was a global war was because the whole war was surrounded and centered with big powers such as Great Britain, Germany, Russia, France, Italy, Japan, and the United States.
The countries outside of Europe that participated in this war was Germany, Russia, Japan, and the United States.
Europe supported the allied forces. ( Soviet Union, United States, France, Great Britain.)
Their contribution to their side of the campaign was being an helping hand to both United States and the Soviet Union and plus they also aided the soldiers.
Explanation:
