<span> by influencing president truman's decision to drop the atomic bomb on japan
The comparatively high losses on Iwo Jima and Okinawa lead many U.S military leaders to believe a invasion of mainland Japan would cost (depending on the estimate) upwards of 250,000 American lives, with some estimates going over one Million. This influenced Truman's decision to drop the atomic bombs in the interest of a Japanese surrender without a invasion, but also halting the Soviet advance into manchuria. </span>
Answer:
Slavery.
Explanation:
The Civil War started because the Northern states wanted to abolish slavery and the Southern states wanted to keep their slaves.