In 1802, Spain returned most of the land to France. 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 miles (2,140,000 km2) Louisiana Purchase for 2.83 cents per acre.
In 1881, the post office from Silver Creek was moved to the rail community of Crawfordsville, which was renamed in 1884 to Clements. The post office was discontinued in 1988.[4]
In 1887, the nearby Clements Stone Arch Bridge was completed over the Cottonwood River.
20th century
There have been numerous floods during the history of Clements. In June and July 1951, due to heavy rains, rivers and streams flooded numerous cities in Kansas, including Clements. Many reservoirs and levees were built in Kansas as part of a response to the Great Flood of 1951.