Unit 4 + 5 Timeline By cameron.martin Feb 17, 1801 Election of 1800 Jefferson was elected president and Amendment 12 was added to the Constitution. Mar 4, 1801 Marbury v. Madison Supreme Court Decision At that time we where still in power because Admas did not have as many votes. Apr 30, 1803 Louisiana Purchase The French turned louisiana over to the United States. Nov 7, 1805 Lewis & Clark reach the Pacific Ocean Know we know more about are world. Dec 24, 1814 Treaty of Ghent The war end in 1812. Dec 22, 1828 Andrew Jackson Elected President (1st Term) The frist time a numorl guy for preisndt.