But to send their bulky products by this route was too expensive. Water transportation cost much less. Such produce as corn-meal, flour, pork, and lumber had to go on rafts or flatboats down the Ohio and Mississippi Rivers to New Orleans. Here the cargo and the boat were sold, or the cargo sold and loaded on ocean vessels, which in time reached the eastern market by a cheaper though longer route than that by land. Thus the Mississippi River, being the only outlet for this heavy produce, was very necessary to the prosperity of the west. But Spain at this time owned New Orleans and all the land about the mouth of the Mississippi River; and as the river became more and more used for traffic Spanish officers at New Orleans began to make trouble. They even went so far as to threaten to prevent the sending of produce to that port. This threat greatly troubled and angered the western farmers. They proposed wild plans to force an outlet for their trade. But before anything was done, news came that Napoleon, who was then at the head of affairs in France, had compelled Spain to give up Louisiana to France. Then the westerners grew still more alarmed about their trade. It was bad enough to have a weak country like Spain in control of Louisiana. But it might be far worse to have France, the greatest military power in the world at that time, own it. All this was very plain to Jefferson, and he knew that Napoleon was planning to establish garrisons and colonies in Louisiana. In view of the possible dangers, he sent James Monroe to France to aid our minister there in securing New Orleans and a definite stretch of territory in Louisiana lying on the east side of the Mississippi River. If he could get that territory, the Americans would then own the entire east bank of the river and could control their own trade. When Monroe reached France, he found that Napoleon not only was willing to sell what Jefferson wanted, but wished him to buy much more. For as Napoleon was about to engage in war with England, he had great need of money. Besides, he was afraid that the English might even invade and capture Louisiana, and in that case he would get nothing for it. He was satisfied, therefore, to sell the whole of the Louisiana territory for fifteen million dollars. This purchase was a big event in American history, for you must remember that what was then called Louisiana was a very large stretch of country. It included all the region between the Mississippi River and the Rocky Mountains, from Canada down to what is now Texas. Look at your map and you will see that it was larger than all the rest of the territory which up to that time had been called the United States. [Illustration: THE UNITED STATES IN 1803, AFTER THE LOUISIANA PURCHASE.] NEW ORLEANS IN 1803