The Missouri River flows through the western part of the state and forms Lake Sakakawea behind the Garrison Dam. The western half of the state is hilly and contains lignite coal and oil. In the east, the Red River forms the Red River Valley, holding fertile farmland. Agriculture has long dominated the economy and culture of North Dakota.
The state capital is Bismarck and the largest city is Fargo. The primary public universities are located in Grand Forks and Fargo. The United States Air Force operates bases at both Minot and Grand Forks.
Transportation in North Dakota is overseen by the North Dakota Department of Transportation. The major Interstate highways are Interstate 29 and Interstate 94, with I-29 and I-94 meeting at Fargo, with I-29 oriented north to south along the eastern edge of the state, and I-94 bisecting the state from east to west between Minnesota and Montana. The largest rail systems in the state are operated by BNSF and the Canadian Pacific Railway. Many branch lines formerly used by BNSF and Canadian Pacific Railway are now operated by the Dakota, Missouri Valley and Western Railroad and the Red River Valley and Western Railroad.
North Dakota's principal airports are the Hector International Airport (FAR) in Fargo, Grand Forks International Airport (GFK), Bismarck Municipal Airport (BIS), and the Minot International Airport (MOT).
Amtrak's Empire Builder runs through North Dakota, making stops at Fargo (2:13 am westbound, 3:35 am eastbound), Grand Forks (4:52 am westbound, 12:57 am eastbound), Minot (around 9 am westbound and around 9:30 pm eastbound), and four other stations. It is the descendant of the famous line of the same name run by the Great Northern Railway, which was built by the tycoon James J. Hill and ran from St. Paul to Seattle. Intercity bus service is provided by Greyhound and Jefferson Lines. Public transit in North Dakota is currently limited to bus systems in the larger cities.