D is your answer, sorry if its wrong:(
The one that declared that slavery was necessary was John C. Calhoun.
He was a US South Senator.
He was a political leader. He was a congressman, a secretary of war, a vice president, a senator, and a secretary of state. He believed that slavery was a symbol of the south and that it was something possitive.
To find a quicker way to Asia and India
The topic is very controversial because there are several viewpoints.
Some people believe that Mexican immigration has become extremely high, and that it must be somehow restricted. Other people may argue that some Mexicans work jobs that most other people would not want to do. Some of these include working on farms or other dirty jobs.
These opposing viewpoints cause the topic of Mexican immigration to be highly controversial.
Depending on the person, they typically revolve around employment and economic reasons
