1492-1596
http://latinamericanhistory.about.com/od/latinamericatheconquest/p/Columbusfirst.htm
http://columbus-day.z12.net/the-first-voyage.php
http://www.britannica.com/EBchecked/topic/127070/Christopher-Columbus/223123/The-first-voyage
http://www.christopher-columbus.eu/voyage-1.htm
http://columbus-day.z12.net/the-first-voyage.php
http://www.britannica.com/EBchecked/topic/127070/Christopher-Columbus/223123/The-first-voyage
http://www.christopher-columbus.eu/voyage-1.htm
1597-1701
http://library.thinkquest.org/20176/armada.htm
http://www.history.com/this-day-in-history/spanish-armada-defeated
http://www.noblesandcourtiers.org/defeat-of-the-spanish-armada.htm
http://www.kwintessential.co.uk/articles/spain/Defeat-of-the-Spanish-Armada/1191
http://www.history.com/this-day-in-history/spanish-armada-defeated
http://www.noblesandcourtiers.org/defeat-of-the-spanish-armada.htm
http://www.kwintessential.co.uk/articles/spain/Defeat-of-the-Spanish-Armada/1191
1702-1806
http://www.archives.gov/exhibits/charters/declaration_transcript.html
http://www.archives.gov/exhibits/charters/declaration.html
http://www.history.com/topics/declaration-of-independence
http://www.ushistory.org/us/8d.asp
http://www.britannica.com/EBchecked/topic/443764/Treaty-of-Paris
http://www.archives.gov/exhibits/charters/declaration.html
http://www.history.com/topics/declaration-of-independence
http://www.ushistory.org/us/8d.asp
http://www.britannica.com/EBchecked/topic/443764/Treaty-of-Paris
1807-1911
http://geography.about.com/od/historyofgeography/a/louisianapurcha.htm
http://www.history.com/topics/louisiana-purchase
http://millercenter.org/president/jackson/essays/biography/3
http://history1800s.about.com/od/leaders/a/electionof1828.htm
http://www.history.com/topics/louisiana-purchase
http://millercenter.org/president/jackson/essays/biography/3
http://history1800s.about.com/od/leaders/a/electionof1828.htm
1912-2013
http://history1900s.about.com/od/worldwarii/a/Attack-Pearl-Harbor.htm
http://www.britannica.com/EBchecked/topic/448010/Pearl-Harbor-attack
http://www.history.com/topics/9-11-attacks
http://abcnews.go.com/US/sept-11-attack-plane-landing-gear-found-york/story?id=19053230#.UbIinq6veRk
http://www.britannica.com/EBchecked/topic/448010/Pearl-Harbor-attack
http://www.history.com/topics/9-11-attacks
http://abcnews.go.com/US/sept-11-attack-plane-landing-gear-found-york/story?id=19053230#.UbIinq6veRk