Most of the remaining land of the original Wisconsin Territory was originally part of the Louisiana Purchase, though a small fraction was part of a parcel ceded by Great Britain in 1818. This land west of the Mississippi had been split off from the Missouri Territory in 1821 and attached to the Michigan Territory in 1834. In 1838, the Iowa Territory was formed, reducing the Wisconsin Territory to the boundaries for the next ten years; upon granting statehood to Wisconsin, its boundaries were once again reduced, to their present location.