The peace of Aix-la-Chapelle, which gave a brief repose to Europe, left unsettled the contending claims of France and England upon American territory. [Sidenote: 1748 A.D.] France had possessions in Canada and also in Louisiana, at the extreme south, many hundreds of miles away. She claimed the entire line of the Mississippi river, with its tributaries; and she had given effect to her pretensions by erecting forts at intervals to connect her settlements in the north with those in the south. Her claim included the Valley of the Ohio. This was a vast and fertile region, whose value had just been discovered by the English. It was yet unpeopled; but its vegetation gave evidence of wealth unknown to the colonists in the eastern settlements. The French, to establish their claim, sent three hundred soldiers into the valley, and nailed upon the trees leaden plates which bore the royal arms of France. They strove by gifts and persuasion to gain over the natives, and expelled the English traders who had made their adventurous way into those recesses. The English, on their part, were not idle. A great trading company was formed, which, in return for certain grants of land, became bound to colonize the valley, to establish trading relations with the Indians, and to maintain a competent military force. This was in the year 1749. In that age there was but one solution of such difficulties. Governments had not learned to reason; they could only fight. Early in 1751 both parties were actively preparing for war. That war went ill with France. When the sword was sheathed in 1759, she had lost not only Ohio, but the whole of Canada.