Among other more obvious things, Napoleon of France was looking for a way out. Rather than loosing it to Americans in a war, he chose to sell the land cheaply to Jefferson.
With the end of the US Civil War large numbers of US Citizens migrated to the Oregon Territory to start a new life. Russian traders had created settlements in the Pacific Northwest and the US...
Spin claimed a vast area of land west of the Mississippi River known as Louisiana. They didn't let the pioners from the U.S trade outside of the port. This conserd the president. In 1893 the French...