Final answer:
The Cold War was caused by major events such as the division of Europe and Asia into separate spheres of influence after World War II, as well as ideological differences between communism and capitalism. The arms race and the development of nuclear weapons also played a significant role.
Step-by-step explanation:
The Cold War was caused by a combination of major events and concepts. One major event was the division of Europe and Asia into separate spheres of influence after World War II, with the United States and its European allies in the Western Bloc and the Soviet Union in the Eastern Bloc. This division ultimately led to a struggle for dominance and power between the two sides.
Another major concept that fueled the Cold War was the ideological differences between communism and capitalism. The Soviet Union promoted and expanded communism, while the United States and its allies championed capitalism and democracy. These conflicting ideologies created tension and competition between the two superpowers.
The arms race and the development of nuclear weapons were also significant factors in causing the Cold War. Both the United States and the Soviet Union sought to build up their military capabilities, including nuclear weapons, which further heightened the tensions between them.