Pottawatomie County, Kansas: History
=== Early history ===
For millennia, the Great Plains of North America were inhabited by nomadic Native Americans. From the 16th to 18th centuries, the Kingdom of France claimed ownership of large parts of North America. In 1762, after the French and Indian War, France secretly ceded New France to Spain, by the Treaty of Fontainebleau.
In 1802, Spain returned most of the land to France, keeping title to about 7,500 square miles. In 1803, most of the land for modern day Kansas was acquired by the United States from France as part of the 828,000 square mile Louisiana Purchase.
In 1854, the Kansas Territory was organized under the provisions of the Kansas–Nebraska Act, then in 1861 Kansas became the 34th U.S. state.
In 1857, Pottawatomie County was established by the Kansas Territorial legislature, out of land formerly included in Riley County. The present county seat of Westmoreland was selected by a vote held in 1882.