Dred Scott v. Sandford, 1857In 1846, the enslaved Dred Scott and his wife Harriet sued for their freedom on the basis that they had been taken by their enslaver to the free territory of Wisconsin where they had lived at Fort Snelling and then brought back to a slave state. What appeared at first to be an easy case for the Scotts to win turned into a pivitol pre-Civil War case as the Supreme Court ruled that not only were enslaved people not citizens of the United States, Congress had no authority to ban slavery in a federal territory. Further dividing a nation for which slavery had become one of the most important political question of the day.