What roles did the Soviet Union, China and the United States play in the Korean War?

They provided diplomatic support, strategic and grand tactical planning, including the planning of the invasion of South Korea, and essential logistical support. They supplied and trained the air forces of China and North Korea

Explanation:

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they live

d) post-world war i