Arkansas By sahiral Feb 10, 1803 Lewis and Clark startat Missouri River Aug 17, 1804 Dunbar and Hunter explore the Ouachita River in Lousiana Jul 15, 1806 Zebulon Pike Expedition begins Apr 1, 1810 Census of 1810 Census of 1810 showed little more than a 1000 people were living in Arkansas, not counting the Indians. Period: Dec 16, 1811 to Mar 16, 1812 new madrid earthquake The most severe and long lasting earthquake ever to take place in the United States. Period: Nov 15, 1818 to Feb 15, 1819 Schoolcraft Expedition Jul 4, 1819 become a territory of arkansas Oct 21, 1819 Thomas Nuttall traveled the Arkansas River
