The State of Jefferson, colloquially known as Jefferson, is one of the 45 states which makes up the United States of America. The state is bordered by the states of Absaroka and Nebraska to the north, Kansas to the east, and the Mexican states of Cimarron and Moctezuma to the south.
Jefferson was historically part of the former colony of Louisiana. The colony was originally a district in the larger colony of New France. Louisiana was ceded to Spain following the Seven Years' War as compensation for Spain's loss of Florida to the British. France would regain the territory in the secret Treaty of San Ildefonso of 1800. Due to the Napoleonic Wars brewing as well as the loss of Haiti as a result of a slave rebellion, Napoleon Bonaparte sold the territory to the United States in 1803 for $11,250,000.
Facing a colonial catastrophe, Spain agreed to sell Florida to the United States and finalize their borders with New Spain in the Adams–Onís Treaty. The new territory would be divided into the District of Louisiana and the Orleans Territory. The Orleans Territory would be admitted into the Union in 1812 as the state of Louisiana while the District of Louisiana would be reorganized into the Missouri Territory. The Jefferson Territory would officially be established out of land from the Kansas Territory and Nebraska Territory in 1861 only two months before the beginning of the American Civil War.