Davenport is the seat of Scott County and the largest of four cities in Iowa and Illinois that comprise the Quad Cities metropolitan area; the other three cities are Bettendorf, Iowa, Rock Island, Illinois, and Moline, Illinois. Because of its location on the Mississippi River, Davenport played an important role in western expansion during the nineteenth century; along with the other Quad Cities, Davenport continues to be a world leader in the production of farm equipment. With the introduction of riverboat gambling in the 1990s, Davenport is emerging as a top Midwestern tourist destination. Davenport's economic resurgence, beginning in 2001, has brought millions of dollars of additional development to the city.