The atomic bomb was developed many years before 1949. It was dropped on Japan in 1945. In 1939, Albert Einstein told Pres. Franklin D. Roosevelt that Nazi Germany wanted to develop an atomic bomb. Then the US government began producing research known only then as The Manhattan Project. A massive laboratory was started at Oak Ridge, Tennessee.
Wiki User
∙ 10y agoHarry S. Truman
princess patrick harwood President Truman
Harry S. Truman
Harry Truman
Harry Truman drop the Atomic Bomb on Hiroshima, Japan and Nagasaki, Japan.
harry s. truman
Harry Truman
President Truman gave the order to drop an atomic bomb on Japan during World War II. He was the first and only U.S. President to order the use of an atomic bomb as a military weapon.
The Atomic bomb, the Truman Doctrine and firing General MacArthur.
President Truman
Harry S. Truman
Harry Truman