in 1819, the tallmadge amendment failed in the senate because; in the early 1800s, most states in the north were; after 1820, slavery would not be allowed in new states depending on their; during the debate over the missouri compromise, henry clay served as; how did the missouri compromise impact the expansion of slavery into the territories?; which best describes the population differences between the north and the south in the early 1800s?; the missouri compromise resulted in missouri joining the union, along with; in the early 1800s, at the time the missouri territory requested statehood,