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Explanation:

The Space Race was an informal 20th-century competition between two Cold War rivals, the Soviet Union (USSR) and the United States (US), to achieve firsts in spaceflight capability. It had its origins in the ballistic missile-based nuclear arms race between the two nations following World War II.

During the arms race, the U.S. and the Soviet Union competed to have the best military weapons. Similarly, both countries also competed to be the first to have a satellite in space during space race.