Our people were very anxious to obtain part of this land, because it included New Orleans. The possession of it seemed necessary for our growing commerce and for our future protection. Thomas Jefferson, then President (1803), was on the point of attempting to buy of France enough of this southern region to include the mouth of the river, when he learned to his surprise that the French would be glad to sell us the whole of that vast territory!
Napoleon was just then planning military operations on a great scale against England, and he was in sore need of "the sinews of war"; so he was glad to sell to this country this immense area for fifteen million dollars.
The addition of the Louisiana territory more than doubled the area of the United States.
=288. The Wonders revealed by the Lewis and Clarke Exploring Expedition.=--The next year President Jefferson thought it best to learn all about this wonderful addition to our territory, and so sent an expedition, under Captains Lewis and Clarke, to explore it. They started from St. Louis in May, 1804. What a remarkable journey it was!--more than two thousand miles up the Missouri River to its source, then across the Rocky Mountains, next down the Columbia River to the Pacific. They were the first white men who ever explored this vast domain, having traveled about six thousand miles.
On their return in September, 1806, they were welcomed with unbounded joy. The stories of their perilous adventures sounded like a fairy romance, and the book of their travels was read everywhere. The explorers brought back word that the Indians had immense quantities of valuable furs. Soon throngs of American hunters and trappers began to roam over the vast plains and through the forests.
All the way from the Missouri River to the Pacific a chain of trading posts, and stores for exchanging goods for furs were established. The wagons of the fur-traders and the winding caravans of emigrants that went under their protection soon made a pretty fair road. This was known as the Oregon trail, and in time it became the principal northern highway for Pacific travel.
=289. How Dr. Whitman saved Oregon to the Union.=--In 1836 a group of young missionaries, two of them with their brides, went from New England to Oregon, taking with them a wagon all the way from the Missouri to their new homes on the Columbia River. One of these was a doctor by the name of Marcus Whitman, whose labors and counsel became of great value to the company.