A ghetto is a part of a city, especially a slum area, occupied by a minority group/groups
Answer:
B. Country X can grow corn more cheaply than Country Y
Explanation:
If you can grow corn cheaper then you have an advantage.
Answer:
Martin Luther's tone is buoyant and hopeful and all with a sense of determination. This is throughout most of the speech, not just during his "i have a dream" part
Because of scale I am pretty sure