How did different cultures impact the development of the United States?

What does it mean to be an American Citizen?

The Late 1800's

http://www.radford.edu/sbisset/civilwar.htm

• The key turning points of the late 1800's which shaped the United States
• http://www.buzzle.com/articles/american-civil-war-facts-and-timeline.html
  
• http://www.buzzle.com/articles/causes-of-the-civil-war.html
  
• The South and slavery
• http://www.buzzle.com/articles/slavery-during-the-civil-war.html
• Underground Railroad
• Interactive: http://www.nationalgeographic.com/features/99/railroad/
• http://www.socialstudiesforkids.com/articles/ushistory/undergroundrailroad1.htm
  
• http://americancivilwar.com/underground_railroad.html
• http://americancivilwar.com/kids_zone/underground_railroad.html
• North & South - two ways of life & economies
• http://shs.westport.k12.ct.us/schager/US%202005-06/Civil%20War/economics%20&_civil_war.htm
  
• Events leading to the Civil War
• http://www.buzzle.com/articles/what-caused-the-civil-war.html
• http://www.buzzle.com/articles/causes-and-effects-of-the-civil-war.html
• http://www.buzzle.com/articles/why-did-the-civil-war-start.html
• A sampling of major Civil War Battles
• http://www2.historycentral.com/CivilWar/index.html
  
• http://history-world.org/some_major_civil_war_battles.htm
  
• http://blueandgraytrail.com/event/Important_Battles_of_the_Civil_War
• Historical Figures
• http://www.pbs.org/civilwar/war/biographies/barton.html
  
• http://www.aboutfamouspeople.com/article1142.html
• The end of the war 
• See "Events leading to the Civil War"
• http://www.pbs.org/wgbh/aia/part4/4p2967.html
  
• Transcontinental Railroad & Westward Expansion
• http://edtech.kennesaw.edu/web/westward.html
  
• http://www.josts.net/tec3012/projects/clowry/west.htm
• http://www.snowcrest.net/jmike/westexp.html
  
• Impact of expansion on Native Americans
• http://www.civilwarhome.com/nativeamericans.htm
  
• http://www.digitalhistory.uh.edu/database/article_display.cfm?HHID=100
  
• http://www.historycentral.com/CivilWar/people/Native.html
  
• Legal, political and historical documents define the values, beliefs and principles of our constitutional democracy. Those values and beliefs continue to be defined over time.
• http://americancivilwar.com/documents/
  
• http://www.pbs.org/civilwar/war/ballou_letter.html
  
• http://www.kn.pacbell.com/wired/fil/pages/listdocumentpa.html