Why did the Nazi target individual groups?

Explanation:

documenting Nazi policies of systematically destroying national and ethnic groups, including the mass murder ... specific term, referring to violent crimes committed against groups with the intent to destroy the ... existence of the group. Human rights, as laid out in the US Bill of Rights or the 1948 United Nations ... of European Jews. He formed the word by combining geno-, from the Greek word for race

a)the court decides which cases it will hear

b because they both had so of the same chosen rules