Answer:
3
Explanation:
Abolitionists are people who strongly support the idea that slavery should not be a thing.
1 is not the answer since they support slavery.
2 is not the answer since triangular trade involves trading slaves.
4 is not the answer since southern plantations owners use slaves.
That leaves us with 3.
Born into slavery, Tubman escaped and subsequently made some thirteen missions to rescue approximately seventy enslaved families and friends, using the network of antislavery activists and safe houses known as the Underground Railroad.
:)
The Shang Dynasty became known as the bronze age of China.