Louisianne refers to a former French territory originally covering the entire Mississippi River Basin. It was conquered by Japan during the War of the Spanish Succession, who subsequently lost it during the First Global War. At that point, it was divided between Britain and France.
The French portion continued to be named Louisianne, while the British portion was divided into two territories, Godaiko in the north and Tenashi in the south.
Louisianne was governed as a colony within New France. In 1771, Japanese settlers in the central portions rebelled, forming the new nation of Misuri, and dividing Louisianne into a northern and southern portion. North Louisianne went on to become Minnesota, while South Louisianne became Arkansas.