Answer:
In Cherokee Nation, the Court ruled that it lacked jurisdiction (the power to hear a case) to review claims of an Indian nation within the United States. In Worcester, the Court ruled that only the United States, and not the individual states, had power to regulate or deal with the Indian nations.
Explanation:
A systematic policy of racial discrimination.
Apartheid was a South African racial segregation system that was enforced through legislation. So, it was segregation and therefore racial discrimination and it was government-regulated as it was enforced through legislation. This makes choice 2 the correct answer, and choice 1,3 and 4 incorrect as it had nothing to do with scholarships, farming or just housing.
Yes it was because Nixon helped cool relationships between the countries which could have made it less likely for nuclear war and tensions between the countries.