The document summarizes the bombings of Hiroshima and Nagasaki. It describes how Japan attacked Pearl Harbor in 1941, prompting the US to develop atomic bombs. The US dropped Little Boy on Hiroshima on August 6, 1945, killing over 100,000 people. They dropped Fat Man on Nagasaki on August 9, killing over 70,000. Japan surrendered six days later, ending World War II. The bombings had devastating immediate and long-term health effects on the cities.