In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: This man claimed that the doctrine of popular sovereignty could coexist with the Dred Scott decision during an explanation of his Freeport Doctrine. This man led a faction of a party whose other faction was led by John C. Breckenridge in the 1860 presidential election. Known as ""The Little Giant,"" this politician was instrumental getting the Kansas-Nebraska Act passed. For 10 points, name this Democratic Illinois Senator who engaged in a famous series of debates in 1858 with Abraham Lincoln.
A:
History