Le passif au prétérit

Slavery ... by Abraham Lincoln. (abolish)

Slaves ... by their masters. (beat)

Big rewards ... to slave catchers. (offer)

Harriet Tubman ... (not catch)

A coded language ... in the Underground Railroad. (use)

Plantations ... by powerful masters. (own)

"Uncle Tom's cabin" ... by Harriet Beecher Stowe. (write)

Mary ... by this book. (move)

Who ... Minty? (nickname)

300 slaves ... by Harriet Tubman. (help)