Complex sentence: Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 am on July 16,1945, as part of the Manhattan Project.
Split into simpler sentences: Trinity was the code name of the first detonation of a nuclear weapon. It was conducted by the United States Army at 5:29 am on July 16,1945, as part of the Manhattan Project.