Rust Belt gets its name from the abandoned factories and urban decay that have marked the region since the 1970s.
Madeline Albright korbelova
Answer:
Martin Luther King Jr. was a leader in the Civil Rights Movement for the African-American. He said this quote above mentioned in the question because he wanted the public to listen to his speech as he stands there as a religious figure who is trustworthy, respected. He uses an example of ethos to convince people for the cause.
Because plantation owners were mainly in the southern states. Also because there were many people that bought them from the south than anywhere else :)