Question

This was the effort during World War II to develop the first nuclear weapons of the United States in collaboration with the U.K. and Canada.

Answer 1

[AI-generated answer — Bot GPT 3.5]

This effort was known as the Manhattan Project. Led by the United States Army Corps of Engineers, the project successfully developed and tested two nuclear weapons, which were dropped on the Japanese cities of Hiroshima and Nagasaki in August 1945, leading to the end of World War II.