Arkansas History Development By ethan.mackey12 Feb 22, 1732 George Washington becomes the first president Jan 25, 1786 Thomas Nuttall explores Arkansas Jan 1, 1789 The French Revolution Mar 28, 1793 Henry Rowe Schoolcraft explores Arkansas Jan 1, 1799 The French Revolution Oct 1, 1800 Napoleon force Spain to sign the secret treaty. Feb 17, 1801 Thomas Jefferson becomes the third president Jan 1, 1803 Thomas jefferson purchased the Louisiana territory from france Jun 7, 1803 Lewis and clark explore the northern Louisiana purchase Jul 1, 1806 Freeman and Custis explore the Red River Dec 1, 1807 Dunbar and Hunter explore the Ouachita River and Hot Springs Dec 16, 1811 New Madrid earthquakes Jun 18, 1812 War of 1812 Jun 22, 1817 Fort Smith is established Jun 26, 1820 Congress approves the Missouri compromise Nov 15, 1824 Quapaw Treaty Jun 15, 1836 The Territory of Arkansas is established