Lawrence, Kansas
Prior to Kansas Territory being established in May 1854, most of Douglas County was part of the Shawnee Indian Reservation (created in 1830). During this period, the Oregon Trail ran parallel to the Kansas River, roughly through the area where Lawrence would eventually be situated and a hill known then as "Hogback Ridge" (i.e., Mount Oread, which sits on the water divide separating the Kansas and Wakarusa River). This area was used as a landmark and an outlook by those on the trail. While this territory was technically unopened to settlement prior to 1854, there did exist a few "squatter settlements" in the area, especially just north of the Kansas River.
Kansas Legislature
The Kansas Territory was created out of the Kansas–Nebraska Act in 1854. In several of the provisions of the act, the law allowed the settlers of the newly created territory to determine, by vote, whether Kansas, once statehood was achieved, would be entered as either a free or a slave state. The act created a rush of both abolitionist Northern and pro-slavery Southern immigrants to the territory, hoping that strength through numbers would place Kansas in their camp. Animosities between the newly arrived sides quickly turned into open violence and guerrilla warfare, giving name to this period known as Bleeding Kansas.