There are a great number of articles on Americans of major importance, on the principal government agencies and departments, and on numerous topics of American history, e.g., Whiskey Rebellion, Ohio Company, Independent Treasury System, and Santa Fe Trail. There are also articles on more than 2,000 cities, towns, and villages in the United States. The state articles supply bibliographies for state history. Aspects of American culture are discussed under American architecture, American art, American literature, and jazz. Many general articles (e.g., slavery; diplomatic service) have useful material and bibliographies relating to the United States.