American Civil War
There are a lot of advertisements to buy books on this site but there is a lot of information about the Civil War as well.
http://www.americancivilwar.com/kids_zone/index.html
Civil War Overview
Very Good - Civil War Overview
http://www.sonofthesouth.net/American-civil-war.htm#(I)_Introduction
Famous Moments in Early American History
Short Films of Noteworthy Events
http://www.earlyamerica.com/series.html