Why did America drop the Atomic bomb?

On 6th August 1945, 8.15am America dropped the first Atomic bomb on Hiroshima in Japan because Japan would not surrender. 130,000 people were killed by the initial blow, mostly women and children and the Atomic bomb caused many more deaths afterwards due to radiation. 3 days later, 9th August America dropped another bomb, which was much more powerful than and just as devastating as the first, on Nagasaki in Japan killing 70,000 people. Since 1940 scientists in the U.S.…showed first 75 words of 914 total…

…showed last 75 words of 914 total…of the bomb. In the world people are still suffering from the effects of the Atomic bomb. People are born deformed and have disease caused by radiation. I think America did not know what the after effects would be and what they were playing with. However America dropped the bomb for several reasons including the most important ones, revenge on Japan for the damage they inflicted on Pearl Harbour and to end the war quickly.