Missouri is one of the 50 states in the United States. Its capital is Jefferson City. Its largest cities are Kansas City and Saint Louis. Some other cities are Columbia (which is where the University of Missouri is), and Springfield.
Missouri officially became a state on August 10, 1821.
Missouri's edges touch a total of eight states. It is touched on the north by Iowa; on the east, across the Mississippi River, by Illinois, Kentucky, and Tennessee; on the south by Arkansas; and on the west by Oklahoma, Kansas, and Nebraska (Kansas and Nebraska are across the Missouri River).