Answer:
Dred Scott
Explanation:
Dred Scott v. Sandford case of 1857 :)
Answer:
It temporarily avoided a civil war again, popular sovereignty being used as a factor to decide whether the state will be free or a slave state. The slavery issue is becoming worse and more violent. This is igniting the fire of civil war. It effectively repealed both the Missouri Compromise 1820 and Compromise of 1850.