Yes, but they made very little progress. They barely got to building cyclotrons to use to enrich uranium and test uranium crossections. The main thing that held them back was unavailability of high quality high power RF amplifier vacuum tubes.
Truman
President Truman.
President Truman.
Truman
Dropped on Japan to end the war.
Harry S. Truman
The U.S. use nuclear bombs during World War ll to bomb Hiroshima and Nagasaki after Japan refused to surrender.
Japan
Japan did research on nuclear weapons in WW2 but never got near planning to build one, let alone making and testing one.
During World War 2 they set them off to test them, and to make Japan surrender unconditionally.
Type your answer here... Pesident Harry s. Truman
the world's third largest producer of nuclear capacity is Japan.