How did the Missouri compromise and the compromise of 1850 conflict with each other

Slavery had come to America in 1619. It existed through the American Revolution, even after Thomas Jefferson penned his famous lines in the Declaration of Independence, "All men are created equal. They are endowed by their creator with certain unalienable rights. That among these are life, liberty, and the pursuit of happiness." Obviously, slaves were not part of this equation. When it came time to write the Constitution, the word "slavery" was never used. Instead, the framers chose to use the term "other people." These other people were counted as 3/5 of a person for the purposes of representation in Congress according to the 3/5 Compromise. This compromise kept slavery in the United States intact. The founders also decided not to do anything about the issue of slavery for twenty years. Someone else would have to deal with it.