Country Studies/Area Handbook - Library of Congress - online series presently contains studies of 85 countries.
Nation Master - World Statistics and Country Comparisons
Nation Master is a vast compilation of data from such sources as the CIA World Fact Book, UN and OECD. You ca generate maps and graphs of all kinds of statistics.
Internet Archive: Digital Library of free Books, Movies, Music and Wayward Machines
The Internet Archive is a digital library of Internet sites and other cultural artifacts in digital form.
Social, political, economic and environmental issues that affect us all.
Infonation - United Nations - the most up-to-date statistical data for the Member States of the United Nations
Guide to geography - About.com
Resources include online atlas, weekly articles about geography, annotated links to hundreds of sites, weekly quizzes, chats etc.
Biographical Dictionary - contains biographical information on over 18,000 people from ancient times to the present day.
Get maps and satellite images from around the world.
One World Journeys
An amazing collaborative project that brings the work of many together in the exploration of our world.
Brain Pop - Social Studies
Explore some fantastic resources for Social Studies.