Question

the most likely reason why president truman ordered the atomic bomb dropped on japan was to show us military strength. force japan to surrender to the allies. guarantee a us victory. prevent the soviet invasion of japan.

Explanation:

Truman ordered the atomic - bomb drops mainly to force Japan to surrender quickly and end the war. The Soviet Union had already entered the war against Japan, and the US wanted to secure a quick victory and avoid a costly invasion of the Japanese mainland. Showing military strength was also a factor, but the primary goal was to force Japan's surrender. Preventing a Soviet invasion of Japan was a secondary consideration compared to forcing Japan's surrender. There was no guarantee of a US victory without the bomb, but the main aim was to end the war by compelling Japan to give up.

Answer:

force Japan to surrender to the Allies.