A person who believed in 'popular sovereignty' would believe that each territory should decide whether it becomes a free or slaveholder state.
Hong kong was controled by the british
An effect of the Land Ordinance of 1785 and the Northwest Ordinance of 1787 was that thousands of settlers looking to inhabit new territories moved to these areas for very little money.
The compromise of 1850 contradicted the Missouri Compromise of 1820 by creating a free state south of 36°30'N. According to the Missouri Compromise, Missouri would enter as a slave state, Maine would join as a free state, and slavery would be prohibited in any new state north of Missouri's southern border, 36°30'N latitude
He was involved in the underground railroad and helped alot of slaves