The United States has 50 states with a population of over 314 million people. Its capital is Washington, D.C. and national bird is the bald eagle. The country is divided into 5 regions - Northeast, Midwest, Southeast, Southwest, and West. Major bodies of water include the Atlantic and Pacific Oceans as well as rivers like the Mississippi, Missouri, Ohio, Columbia, Colorado, and Rio Grande. The Great Lakes and Gulf of Mexico are also important bodies of water.