Appalachian<span> highlands, and Rocky </span><span>Mountains</span>
E: both B and D. The automobile and the mass assembly line
Answer: The Greensboro sit-in
The Greensboro sit-in was a civil rights protest that started in 1960, when young African American students staged a sit-in at a segregated Woolworth's lunch counter in Greensboro, North Carolina, and refused to leave after being denied service. The sit-in movement soon spread to college towns throughout the South.
Explanation:Have a great day