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.

One tributary of this river is the Licking River. During the Civil War, this river was nicknamed the River Jordan, and it also served as an unofficial extension of the Mason-Dixon Line to the west. Its tributaries include the Wabash and the Allegheny, and its confluence with the Mississippi is near Cairo, Illinois. Cities on this river include Pittsburgh and Cincinnati. For 10 points, name this river whose namesake state has its capital at Columbus.
Social Science