THE BASIC RULES
Constitution of the United States: http://lcweb2.loc.gov/const/const.html
Bill of Rights (First Ten Amendments to Constitution): http://lcweb2.loc.gov/const/bor.html
Amendments 11-27 to the Constitution: http://lcweb2.loc.gov/const/amend.html
REASONS BEHIND THE RULES
Declaration of Independence: http://www.law.indiana.edu/uslawdocs/declaration.html
Federalist Paper #10 (Why Complex Gov. Structures): http://w3.one.net/~mweiler/ushda/fedpap10.htm
DOCUMENTS THAT SHAPED THE UNITED STATES
A Mega-Site Containing Many Such Documents: http://w3.one.net/~mweiler/ushda/list.htm
The Gettysburg Address--Constitution Reaffirmed: http://w3.one.net/~mweiler/ushda/gan.htm
Emancipation Proclamation: Prelude to Amendments 13-15: http://w3.one.net/~mweiler/ushda/ep.htm
Lincoln's Second Inaugural Address: http://w3.one.net/~mweiler/ushda/al2inaug.htm
POUPOURRI
Find out about ANY country (Don't be a "map moron"): http://www.geographic.org
Interactive Geography, Games that Make You Smarter: library.advanced.org/10157/
Geographic Info Systems (GIS) Maps and Research: http://www.esri.com/gisforeveryone/