Answer:
This arms race is often cited as one of the causes of World War I. The United States' use of nuclear weapons to end World War II led to a determined and soon successful effort by the Soviet Union to acquire such weapons, followed by a long-running nuclear arms race between the two superpowers.
Explanation:
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Many people in the South of the United States opposed tariffs because they would have disproportionately affected agricultural business--which was at the heart of the Southern economy.
The answer would be "pull factor"
