Mapping History contains hundreds animated and interactive maps from key events in the history's of the United States, Europe, Latin America, and Africa. The U.S. maps are sorted chronologically and by event or era. The European maps section is categorized more by topic and appears to be still under construction. The Latin America section is sorted into three regions (Caribbean, Central America, South America) and there are four African maps, each one shows the continent's division and political borders at various points of history. Mapping History is an excellent resource for the social studies classroom. Thanks out to Greg Odell who shared this site on Twitter.