Who of the Following People Is Correctly Matched to His

Multiple Choice

Who of the following people is correctly matched to his position on the extension of slavery during the debate over the admission of California into the Union in 1850?

A) John C.Calhoun-supported an extension of the Missouri Compromise line to the Pacific Ocean
B) James Buchanan and other northern Democrats-argued that Congress had no authority to regulate slavery in the territories
C) Lewis Cass-supported popular sovereignty to address the slavery issue
D) Stephen Douglas-restrict Southern slavery within its original boundaries