There is everything you need to know about every country. Very well-organized and simple. Pick a country from the Home Page, and a wealth of information about that country unfolds.
Some pages take a bit of time to load, some because of maps, other because of long lists of text.
World Fact Book lists every major country. Click on the country, and you jump to a page about that country which lists facts regarding geography, people, government, economy, transportation, communications systems, and defense forces. The appendices list such information about weights and measures, the United Nations System, Estimates of Gross Domestic Products, and other interesting tidbits. This site has value for teachers and students, and for the general web browsing population who might ever need geographical facts. An outstanding resource packed with information.