The abolitionist movement was a part of the Civil War because in the Dred Scott case, it was the North fighting, saying that slavery needed to stop, V.S. the South, fighting to bring him back to the plantations as a slave. The South won as the Fugitive Slave Law was passed. This was a cause because the Union wanted to end slavery.
Dred Scott
Dred Scott was the runaway slave that tried to sue for his freedom. The case went all the way to the Supreme Court, but then the South won, sending Scott back to picking cotton on a plantation.