Burlington Northern Santa Fe Corporation operates one of the largest railroad networks in North America. The network includes more than 33,500 miles (53,900 kilometers) of track and routes in 28 states in the western, central, and southern United States, and in the Canadian provinces of British Columbia and Manitoba. Burlington Northern Santa Fe Corporation, or BNSF for short, was formed in 1995 by the merger of Burlington Northern Inc. and the Santa Fe Pacific Corporation, the parent companies of two major railroads. The majority of the corporation's revenue is generated by freight-hauling activities. BNSF has headquarters in Fort Worth, Texas.