Note 34 — OREGON EXPEDITION

The Territory of Missouri was formed in 1812 of all the Louisiana Purchase outside the limits of the newly-erected state of Louisiana. In 1819 Arkansas Territory was cut out, and the following year the state of Missouri. The remaining region was left with no definite organization; but by an act of 1830 it was defined as Indian Territory—south of a line drawn from Missouri River at the mouth of the Ponca, and west to the Rocky Mountains. This vast unorganized region was indefinitely called Missouri Territory, Indian Territory, Western Territory, and even (on one map of the period) Oregon Territory—although the latter name was usually confined to the region west of the Rockies, and north of Mexican bounds.—Ed.