Why she the US begin the Manhattan project?

The United States initiated the Manhattan Project in response to fears that Nazi Germany was developing atomic weapons during World War II. The project aimed to harness nuclear fission to create powerful bombs before the Axis powers could. Additionally, the successful development of atomic weapons was seen as crucial for ensuring U.S. military superiority and post-war influence. Ultimately, the project culminated in the development and use of atomic bombs on Hiroshima and Nagasaki in 1945.