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Missouri History,  MO Bloggin',  This Day in Missouri History

The Platte Purchase

1837 – Missouri Annexes Northwestern Border with the Platte Purchase

Map of Missouri Prior to Platte Purchase

Prior to 1837, much of the northwestern part of present-day Missouri was not a part of the state at all. When Missouri was founded in 1821, the land along the present-day Iowa, Kansas, and Nebraska borders was reserved for the relocation of Native American tribes. At that point in time, Missouri’s western border was a near vertical line running north of Jackson County all the way to the Iowa border. That was until the state of Missouri annexed those lands in what was known as the Platte Purchase.

Map of the Platte Country

The Platte Lands

The vast transfer of land that now comprises the counties of Andrew, Atchison, Buchanan, Holt, Nodaway, and Platte did not happen all at once. Instead, several treaties were signed with various tribes between 1830 and 1837 that led to this large land acquisition by the state. The first meeting about the annexation happened near Liberty, Missouri in 1835. Senator Thomas Hart Benton then introduced the bill in Congress to legally acquire the lands. Then in 1837, President Martin Van Buren issued a proclamation that completed the annexation of nearly 2-million acres. When it was done, the new lands officially outlined the northwestern border of the state.

Robidoux Row in St. Joseph, MO
Courtesy of City of St. Joseph

The Platte Area Today

The annexation of the rural led to a significant population increase of European settlers but also pushed out nearly all of the Native Americans who called that area home. The most prominent town in the region was St. Joseph, although it was known as Blacksnake Hills at the time.

Other towns in the region now include:

It also includes the land once owned by John Sliker Bilby, the largest landowner in America in 1900.

The Bilby Ranch lands in the Platte Purchase region
Courtes of Missouri Department of Conservation

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