What are the main points of the dred scott decision?

The Dred Scott vs. Sandford decision by the Supreme Court of the US. Scott sued for his freedom on the ground that he lived in a free state and a free territory for a prolonged period of time. The main points of the Dred Scott decision were:

- The fact that Dred lived in a free state for a prolonged period of time did not make him free once he returned to a pro-slave state.

- Dred Scott could not be considered a citizen of the US and could not sue the government.

- The Court also decided that the Congress did not have the power to ban slavery in a territory because that decision would be the violation of the 5th Amendment. Which made the Missouri Compromise unconstitutional.

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