Respuesta :
Answer:
The correct answer is option A. "Nuclear Arms".
Explanation:
When United States dropped atomic bombs in Hiroshima, and three days later in Nagasaki, it marked the end of World War II. This also marked the start of a nuclear arms race between the two dominant forces of the world: United States and the Soviet Union. This nuclear arms race was a key issue of the Cold War, having a series of tests that increase the tension between the two countries who looked for supremacy in nuclear warfare.