Question

question 1-3
this excerpt is about the use of the atomic bomb.
sixteen hours ago an american airplane dropped one bomb on hiroshima, an important japanese army base. that bomb had more power than 20,000 tons of tnt. it is an atomic bomb. it is a harnessing of the basic power of the universe.
— president harry s. truman, august 6, 1945
what factor most contributed to president trumans decision to use this weapon?
○ he wanted to demonstrate u.s. military strength to the soviet union
○ he needed to test the effectiveness of a new military technology
○ he believed it would end the war quickly and reduce further american casualties

Explanation:

To determine the factor most contributing to Truman's decision to use the atomic bomb, we analyze the context of World War II. By 1945, the war in the Pacific was costly in American lives. The atomic bomb was seen as a way to force Japan's surrender quickly, avoiding a prolonged invasion (like Operation Downfall) that would have caused massive U.S. casualties. The option about demonstrating strength to the Soviet Union (the "atomic diplomacy" argument) is debated but not the primary reason. Testing the technology was not the main goal—ending the war and saving American lives was the key motivation.

Answer:

He believed it would end the war quickly and reduce further American casualties