Final answer:
The Manhattan Project was overseen by the Army branch of the military.
Step-by-step explanation:
The Manhattan Project and Its Oversight
The Manhattan Project was a top-secret research project that took place during World War II. Its purpose was to develop atomic weapons, specifically the atomic bomb. The project was overseen by the Army branch of the military.
General Leslie Groves was appointed as the director of the project and was responsible for its coordination and management. Under his leadership, the Manhattan Project brought together scientists, engineers, and military personnel to work towards the development of atomic weapons.
Learn more about The oversight of the Manhattan Project