Which event marked the beginning of the Arms Race between the U.S. and Soviet Union?

• Soviet Union tests the first atomic bomb

• Soviet Union lands on the moon

• Eisenhower fires General MacArthur

• US Provides loans to help European countries rebuild

1 answer

The event that marked the beginning of the Arms Race between the U.S. and the Soviet Union was when the Soviet Union tested the first atomic bomb in 1949.