The principle of 'once free, always free'.
Dred Scott was the slave of an army Doctor Who was posted to free soil, where Scott could automatically have claimed his freedom.
For some reason, Scott did not do this untl he was back in slave country.
The local courts had never dealt with this situation before, and it ended up in the Supreme Court, where the Chief Justice alarmed the powerful Abolitionist lobby by invoking the Constitution - that a man's property is sacred, and slaves were property.
This appeared to mean that no state could declare itself to be free soil.
Chat with our AI personalities
The Dred Scott vs. Sanford case was decided in March of 1857 by the United State Supreme Court, led by Chief Justice Roger B. Taney. In this decision, it was declared that all blacks, slaves as well as free , were not and could never become citizens of the United States.
First of all learn how to talk. Then go ask Your History teacher this question. you should have said "What did the Dred Scott decision do?" It was a slave who thought he was free and they went to court over it and the court said he was a slave and that he was not free.
It declared slavery to be legal in every state of the Union, so invalidating all the compromises, and driving the two sides further apart than ever.
The Dred Scott decision was totally unfair in the eyes of the Union. Dred Scott had lived in a free state up until his master's death, yet the court still declared him to be a slave. Scott was denied his freedom and rights to citizenry in his own country. This really infuriated other African Americans, and it was considered one of the worst Supreme Court decisions of all time.
the decision made slavery legal in all us territories that were not yet states