Answer:
the 15th Amendment granted the black to vote under the law.
blacks are slave but when it was abolished they gain their full citizenship and right to vote.
Rockefeller was able to build his monopoly across the oil industry since he bought up oil refineries, cut costs, and reinvested his profits in other refineries.
Rockefeller was an American oil industry business magnate, industrialist, as well as philanthropist. He is widely regarded to as the wealthiest American of all time, and the richest person in modern history.
Rockefeller's wealth sky rocketed as kerosene and gasoline grew in importance, and he turnt into the richest person in the country, controlling 90% of all oil in the United States at his peak.
When it comes to matters of policy, the public tends to look to the federal government to lead the way, but the local governments actually determine educational policy. Early in our nation's history, lawmakers passed the 10th Amendment to the Constitution which is the basis for making education a function of the states. Each school district is administered and financed by the community along with that district's state government. School districts with higher socioeconomic levels tend to give more resources to their schools. Standards and quality of education consequently vary widely from state to state, town to town, and even district to district. However, federal and state government can still play some role in education policy, as this article explains.
