After the US conquerred Okinawa, an island South of Japan, the Allied forces decided to conquer Japan. Warnings were sent out to Japan telling them to surrender to the Allies, but Japan did not reply. On August 6, 1945, the US dropped an atomic bomb on Hiroshima, a Japanese city on the island of Honshu where over 70,000 people died. On August 9 of 1945, the US dropped a second atomic bomb on Nagasaki and 70,000 more people were killed immediately. Radiation killed many more later.