Answer:
The first people to do so were the Akkadian's king Sargon (reigned 2334–2284 BCE). He conquered the cities of Sumer and brought them under one system of government.
Explanation:
The Civil Rights Act of 1964 outlawed discrimination based on sex, religion, race, etc. This means that no segregation in public places are allowed.
An oligarchy- by definition- means, “A small group of people having control of a country, group, or organization.” (Source for definition: “Google”)
The answers not supported by this definition are: B, C, and D, as B and C are citizen-contributed systems, and D is a monarchy/dictatorship.
This leaves us with answer “A” being the only plausible answer to fit our description.
I hope this helps!