PART A: One of the direct results of the decision to drop the atomic bomb was the fact that Japan surrendered, and
the war ended. What was an indirect result of the decision
to drop the bomb?
A President Truman learned of the success of the
Manhattan Project.
B The Japanese were not told of the power of the atomic
bomb.
C Tension between the United States and the Soviet Union
increased.
D Japanese kamikaze raids caused the loss of many
American lives.

A President Truman learned of the success of the Manhattan Project

Explanation:

American President Harry Truman made the decision to use the devastating atomic bomb on Japan as a direct response to the Pear Harbor attack on American soil.

The direct result of this was that the Japanese gave their unconditional surrender and the war was ended.

However, the indirect result of the decision to drop the atomic bomb was that President Truman learned of the success of the Manhattan project which was the atomic bomb.

it was the first major victory for the colonists.