Describe the role of the manhattan project

The Trinity test of the Manhattan Project was the first detonation of a nuclear weapon. The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada.

ok sorry the answer is a. by their religion

the united states broke it's neutrality was the constant german sinking of trading vessels resulting in the loss of lives, one example would be the lusitania.