How did big businesses that developed during the Gilded Age exploit the economy and workers

Compare how one's social status affect his or her opportunities in ancient greece and rome?

Powers of states the first letter of the answer is r.

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.