Kansas City, Missouri
Kansas City is the largest city in the U.S. state of Missouri. According to the U.S. Census Bureau, the city had an estimated population of 488,943 in 2017, making it the 37th most-populous city in the United States. It is the central city of the Kansas City metropolitan area, which straddles the Kansas–Missouri state line. Kansas City was founded in the 1830s as a Missouri River port at its confluence with the Kansas River coming in from the west. On June 1, 1850 the town of Kansas was incorporated; shortly after came the establishment of the Kansas Territory. Confusion between the two ensued and the name Kansas City was assigned to distinguish them soon after.
Douglas County, Kansas
In 1854, the Kansas Territory was organized, then in 1861 Kansas became the 34th U.S. state. In 1855, Douglas County was established. Douglas County was opened for settlement on May 15, 1854, and was named for Stephen A. Douglas, a senator from Illinois. The county was practically at the center of the Bleeding Kansas years as leaders in Lecompton (the territorial capital) wanted Kansas to be a slave state, whereas leaders in Lawrence wanted Kansas to be a free state. The pro- and anti-slavery settlers held great animosity towards one another, leading to many events, such as the drafting of the Lecompton Constitution (which would have admitted Kansas into the Union as a slave state), the Wakarusa War (1855), the Sack of Lawrence (1856), Battle of Black Jack (1856), and the Lawrence Massacre (1863).