Answer:
The Cold War was a period of geopolitical tension between the Soviet Union and the United States
The correct option is D.
Scientific revolution refers to the principle which historians employed to explain the emergence and rapid development of modern science. The scientific revolution started in Europe at about 1543 and it brings about a great change in the way people think. During this period, people started criticizing thoughts that were previously acceptable and unchallenged; it also led to the establishment of many modern sciences.
