Answer:
The Soviet Union.
Explanation:
• The Cold War was a period of geopolitical tension between the Soviet Union and the United States.
• Tension between the United States and the Soviet Union led to the Nuclear Arms Race and the Space Race, in which each country tried to gain superiority in the areas of nuclear weapons and space technology.
• Soldiers of the Soviet Union and the United States did not do battle directly during the Cold War. But the two superpowers continually antagonized each other through political maneuvering, military coalitions, espionage, propaganda, arms buildups, economic aid, and proxy wars between other nations.
