sentences:  In turn, after the American Revolutionary War, the Crown ceded this territory east of the Mississippi River to the new United States, including land it did not control, which was occupied by Native American nations.In 1811 the Shawnee chief Tecumseh rallied several tribes to try to expel the European-American settlers from the area.When General William Henry Harrison took an army from Vincennes to the Battle of Tippecanoe in late 1811 to fight with the Indians, Zachariah Cicott served as a scout.