The first Native American peoples arrived in what is today the state Kansas, approximately 9,000 years ago. Initially these people were hunter-gatherers, but around 3,000 years some converted to a largely settled agricultural lifestyle and developed permanent dwellings in larger settlements.
In 1541, the Spanish conquistador Francisco Vasquez de Coronado visited the region. During this expedition, the horse was introduced to the Plains Indian, and this greatly altered their lifestyle and range. The Kansa and Osage peoples arrived in Kansas during the 17th century. Other Native American peoples who inhabited present-day Kansas included the Pawnees and the Otoe tribe of the Sioux.
In 1724, the French visited the Kansas river and established a trading post near the mouth of the river. At this time, the territory was part of the area claimed as New France. Kansas became an unorganized territory of the United States following the 1803 Louisana Purchase from France.
In 1806, the Zebulon Pike explored the area, and labelled it as the "Great American Desert". As a result, in the 1820s, the federal government "permanently" set aside the region as Indian territory and closed it to white settlement. Between the 1820s and 1840s, the federal government moved many Native American tribes into the region. Despite the prohibition on white settlement, the Santa Fe trail passed through Kansas, US Army forts were established inside the territory (starting with Fort Leavenworth in 1827), and by the 1850s, many white Americans were illegally squatting in the area and calling for the entire territory to be opened for settlement.
First published at http://www.vacation2usa.com/p1_state_kansas_history.php
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Source: www.ezinearticles.com