Country Studies - Description of the historical setting and the social, economic, political, and national security systems of countries throughout the world.
NationMaster - Graphical comparisons of nations, with maps, graphs and statistics using data from such sources as the CIA World Factbook, UN, and OECD.
StateMaster - Research and compare a multitude of different data on U.S. states.
U.S. Department of State Background Notes - Facts about the land, people, history, government, economy, and foreign relations of countries throughout the world.
World Fact Book - Provides national-level information on countries, territories, and dependencies.