Answer: As a Hungarian-American physicist
Notes: Leo Szilard was a Hungarian-American physicist and inventor. He conceived the nuclear chain reaction in 1933, patented the idea of a nuclear fission reactor in 1934, and in late 1939 wrote the letter for Albert Einstein's signature that resulted in the Manhattan Project that built the atomic bomb. According to Gyorgy Marx, he was one of the Hungarian scientists known as The Martians.
