The Enola Gay drops an atomic bomb on Hiroshima, Japan during World War II.

An American bomber, named after the pilot's mother, departs from a Pacific island 1,500 miles from Japan. President Truman believes the bomb will end World War II sooner and save many American lives. Hiroshima, with a population of 350,000, is the target. The explosion results in over 130,000 deaths, yet Japan does not surrender.

What was the population of Hiroshima at the time of the bombing?

What was the immediate impact of the explosion in terms of casualties?