Answer:
Q1.The Harlem Hellfighters were an African-American infantry unit in WWI who spent more time in combat than any other American unit. Despite their courage, sacrifice and dedication to their country, they returned home to face racism and segregation from their fellow countrymen.
Q2. Since the first Africans were brought as slaves to the British colony of Jamestown, Va. in 1619, blacks had suffered oppression in the United States first under the American slavery system, and then under the rigid practices of segregation and discrimination that were codified under the “Jim Crow Laws.”
Step-by-step explanation: