<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be "the Enlightenment philosopher John Locke," since he was very much a proponent of popular sovereignty and the social contract. </span></span>
The answer is D. the district of Columbia was closed to slavery.
Senator Henry Clay introduced a series of resolutions on January 29, 1850, in an attempt to seek a compromise and avert a crisis between North and south. As part of the Compromise of 1850, the Fugitive Slave Act was amended and the slave trade in Washington DC was abolished.