Final answer:
The Manhattan Project was conducted from 1942 to 1946 during World War II to develop atomic bombs.
Step-by-step explanation:
The Manhattan Project was a secret research program during World War II that aimed to develop atomic bombs. It was conducted from 1942 to 1946. The project was mainly focused on the development of the first nuclear weapons and was led by the United States with contributions from the United Kingdom and Canada.
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