Present-day Indiana became part of the Northwest Territory in 1787. In 1800, Ohio was separated from the Northwest Territory by Congress, designating the rest of the land as the Indiana Territory. President Thomas Jefferson chose William Henry Harrison as the governor of the territory and Vincennes was established as the capital. After Michigan was separated and the Illinois Territory was formed, the size of Indiana was reduced to its current state. In 1810, Shawnee leader Tecumseh and his brother Tenskwatawa encouraged other tribes to resist European settlement into the territory. Tensions rose and Harrison was authorized to launch a preemptive expedition against Tecumseh's Confederacy resulting in a US victory at the Battle of Tippecanoe on November 7, 1811. Tecumseh was killed in 1813 during the Battle of Thames. After his death, armed resistance to United States control ended in the region. Most Native Americans in the state were later removed through negotiations to purchase their lands in the 1820s and 1830s.
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