Kansas City was founded in 1838 as the “Town of Kansas” at the confluence of the Missouri and Kansas rivers and was incorporated in its present form in 1850. Situated opposite Kansas City, Kansas, the city was the location of several battles during the Civil War, including the Battle of Westport. Kansas City, informally called “KC,” is the largest city in the U.S. State of Missouri and is the anchor city of the Kansas City Metropolitan Area, the second largest metro area in Missouri. It encompasses 318 square miles (820 km2) in parts of Jackson, Clay, Cass, and Platte counties. It is one of two county seats of Jackson County, the other being Independence, which is to the city’s east.