from june 4, 1812 until august 10, 1821, the land was part of the missouri territory. missouri became a state, so the land became unorganized. it had no people living in it except for fort leavenworth. the fort was created in 1827 by henry leavenworth with the 3rd u.s infantry from st. louis, missouri; it is the first permanent european settlement in kansas. the fort was created as the westernmost outpost of the american military. it was created to protect trade along the santa fe trail from native americans. the trade came from the east. it came either by land using the boone's lick road, or by water using the missouri river.