Who repealed the Missouri compromise? Who proposed amendments to protect slavery?

In 1854, the Missouri Compromise was repealed by the Kansas-Nebraska Act.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

Explanation:

b toward the volcano.landward. the landward side of something is the side nearest to the land or facing the land, rather than the sea.