Art, math, science, maybe psychology
He did this to put an end to slavery.
The answer is Leon Trotsky. He was born in Ukraine to rich Jewish farmers. On his last year in school, he was fascinated with Marxism and became a revolutionary. His power struggle against Joseph Stalin led to his banishment from the Soviet Union. He lived in Turkey, France, Norway and finally Mexico where he was assassinated by an agent of the Soviet Union's secret police.
its because the traits mix when two animals reproduce together and sometimes babies are born with small defects that are unnoticeable and when they reproduce that defect could get amplified