Come get your own copy of Uncle Tom's Cabin here.
In 1850 there was an idea that went against the Missouri Comprise and gave the states the right to choose to be a free or a slave state. It was called Popular sovereignty. It showed that the Missouri Comprise was unconstitutional.
Kansas Nebraska Act of 1854 / Bleeding Kansas
In 1850 there was a law set in place so that slave could not run away to the north and be free and allowed the slave catchers to take any slave they call there own. It caused outrage in the north.
Dread Scott Decision of 1857
We have decided that Dread Scott is guilty
Uncle Tom's Cabin was a book written by Harriet Beecher Stowe that told the life of a slave and the hardships they went through. It showed the north what slave had to go through and, it made the north upset.
Lincoln - Douglas Debates of 1858
Yes it was
It allowed Nebraska and Kansas to decide whether they were going to be a slave or a free state and people from all around came to vote and it turned into a messy situation. Some people think this is where the civil war started.
The Dread Scott decision was a Supreme Court between Dread Scott and his Slave Owner. the basic idea of it was the Dread Scott and his family passed into free territory which made them free and the slave owner took them back, Dread Scott lost the case but made the north mad which made them even more at the south's throat.
It was a debate that was held to the public and one of the first to do so. It was a heated debate 3 and a 1/2 hours long that would go over slavery and events that were going on. Lincoln did loose but his ideas were out to the public and made people consider changing to a republican when he would eventually run for president.