The correct answer is "Splitting the Atom".
Scientist Albert Einstein and Robert Oppenheimer made both critical contributions to the development of nuclear weapons. Albert Einstein focused on the theoretical part, proposing his famous "relativity theory", which earned him the Novel Prize for Physics in 1921. On the other hand, Oppenheimer applied the theoretical model of Einstein and applied it to the development of the first Atomic Bomb in New Mexico, which would be later deployed over Hiroshima, Japan on August 6th, 1945.
