Why is Stephen Douglas famous?

It was "The Little Giant"... Stephen Douglas got this nickname after a political brawl in 1834 "it was the norm for politicians to fist-fight and even previously have duels"... President John Quincy Adams was shocked to witness the five-foot, four inch Illinoisian, during one of his speeches in the House of Representatives, he ripped off his necktie, unbuttoned his coat and began to brawl in a roaring defense of Andrew Jackson. After Douglas was taken out of that meeting house in Jacksonville, Illinois, by a cheering crowd, who coined him "The Little Giant" and the nickname stuck because of his short stature and powerful political influences.