"<span>a. Many immigrants tried to maintain their traditional religion and diet" is the best option since many immigrants were Catholic, which upset the Protestant masses. </span>
Because they could afford it. The Roman education system was based on the Greek system, so why not learn it in Greece. The Romans education was based on the classical Greek tradition but infused with Roman politics, cosmology, and religious beliefs. The only children to receive a formal education were the children of the rich. The very rich families employed a private tutor to teach their children. Those that could not afford to do this used either slaves or sent their children to a private school.
This came to be known as the American System developed by Henry Clay
A. Isolation allowed china to develop on its own, without too much interference from foreign invasion.