ANSWER: The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism. This is because big armies become potential threats to other countries, other countries started forcing alliances in order to secure land. ... The overall cause of World War was the assassination of Archduke Franz Ferdinan
The answer to this is the second response I think
During World War II, the United States began to provide significant military supplies and other assistance to the Allies in September 1940, even though the United States did not enter the war until December 1941. Much of this aid flowed to the United Kingdom and other nations already at war with Germany and Japan through an innovative program known as Lend-Lease
The mercantilism policy served to increase tensions and conflict between great
Britain and its American colonies. the policy,coined by Adam smith was the practice by several European countries to allow exports and discourage import, hence exports were encouraged from Great Britain but imports were not from the colonies.
Answer:
established that all of humanity would be guarded by an international legal shield and that even a head of state would be held criminally responsible and punished for aggression and crimes against humanity