What effect did the dropping of the atomic bomb have after the war? it made future wars less likely. it started the vietnam war. it ended relations between japan and the allies. it started a nuclear arms race.

It started a nuclear arms race.

Explanation:

The nuclear arms race was the great nuclear arms race between the United States and the Soviet Union, especially during the Cold War.

When the Cold War began, at the beginning (end of the 1940s) of the postwar World War II the United States was the only country with atomic bombs, weapons that used to defeat Japan in the last great world war, but quickly the USSR developed them in the year 1949 and from there began a great growth of nuclear bombs.

The nuclear rally completely ended the Cold War in 1991 after the breakup of the Soviet Union due to the series of events following the fall of the Berlin Wall.

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