John Robert Lewis (born February 21, 1940) is an American politician and civil rights leader. He is the U.S. Representative for Georgia's 5th congressional district, serving since 1987, and is the dean of the Georgia congressional delegation. His district includes three-quarters of Atlanta.
The British were the Western Imperialists you're looking for.
The answer is D. "urged immedite emancipation of slaves in the unted states.