Plessy v. Ferguson set forth the doctrine of "separate but equal" which enabled institutionalized segregation as long as things were "equal"
However, the Court did not define what equal really meant.
So, you might see a bathroom for African-Americans that was a hole in the ground while the whites only bathroom was pristine and modern.
Answer:
Separation of powers
Explanation:
The three branches are executive, legislative, and judicial. No other explanation is really needed, but I'll give an example: the US government, with the president/vice president/cabinet, Congress, and the Supreme Court/other federal courts.
The national judiciary hears cases involving federal law and interstate cases. It also interprets the constitutionality of laws.
