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PBS. PBS, n.d. Web. 10 Apr. 2015. <http://www.pbs.org/wned/war-of-1812/essays/american-perspective/>.
"Thomas Jefferson's Monticello." The Louisiana Purchase. N.p., n.d. Web. 10 Apr. 2015. <http://www.monticello.org/site/jefferson/louisiana-purchase>.
"War of 1812." History.com. A&E Television Networks, n.d. Web. 10 Apr. 2015. <http://www.history.com/topics/war-of-1812>.
"The Gold Rush of 1849." History.com. A&E Television Networks, n.d. Web. 04 May 2015.
Hickman, Kennedy. "Mexican-American War History." N.p., n.d. Web. 04 May 2015.
"The Missouri Compromise." Ushistory.org. Independence Hall Association, n.d. Web. 04 May 2015.
"Oregon Trail | Historical Trail, United States." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 04 May 2015.
"Slavery in America." History.com. A&E Television Networks, n.d. Web. 04 May 2015.