USA HISTORY

Detailed explanation-1: -In 1854, the Missouri Compromise was repealed by the Kansas-Nebraska Act. Three years later the Missouri Compromise was declared unconstitutional by the Supreme Court in the Dred Scott decision, which ruled that Congress did not have the authority to prohibit slavery in the territories.

Detailed explanation-2: -This provision held for 34 years, until it was repealed by the Kansas-Nebraska Act of 1854. In 1857, the Supreme Court ruled that the Missouri Compromise was unconstitutional in its Dred Scott v. Sandford decision.

Detailed explanation-3: -Finally, and most controversially, a Fugitive Slave Law was passed, requiring northerners to return runaway slaves to their owners under penalty of law. The Compromise of 1850 overturned the Missouri Compromise and left the overall issue of slavery unsettled.