Answer:
because he was a leader in the abolition movement
Explanation:
Frederick Douglass was an escaped slave who became a prominent activist, author and public speaker. He became a leader in the abolitionist movement, which sought to end the practice of slavery, before and during the Civil War.
Trade Barrier
I think
It tells the history of oppression for future generations to remember.
Pull factors is what brought them to America. Push factors is what made them leave