Answer: The Cold War.
Step-by-step explanation:
A term in history that refers to the political conflict of east and west that never grew into open armed conflict. The main US ally in the Cold War was Britain, and primarily the Americans focused their political and economic resources on stopping the spread of communism, which mainly had its stronghold in the Soviet Union.
The Cold War entailed a race in arms and technological dominance to gain supremacy over a rival. During the Cold War, billions of dollars were spent for this purpose. The Cold War was marked by constant tension among the conflicting parties, and on several occasions, intolerance reached a point of heat and thus threatened the world with a new global war.