Answer:
C. he built a vast network of canals for trade and communication, known as the Grand Canal.
Explanation:
Brown v. Board of Education (1954). The case ruled that segregated public schools were unconstitutional on the grounds that "separate could never be equal." The case overturned Plessy v. Ferguson, a landmark and deeply racist Supreme Court decision from 1896 that had allowed segregated education.
Oligarchy is the political system that is run by a group of noble families or wealthy members of a society. The term Oligarchy was first used by the great Aristotle for describing the powers that were held by a very small and highly privileged group. These people often misused their powers and treated the people under their rule very poorly and also used them to satisfy their selfish needs. It has been commonly seen that the rulers that believed in Oligarchy actually selected people on herediterary basis and not based on merit.
He means that whatever we do is for mankind. All the work is for the development of the humans.
