So far as his own safety was concerned, his alarm was needless; but not so as regarded the colony with whose affairs he was charged. For those who had eyes to see it, a terror and a woe lowered in the future of Canada. In an evil hour for her, the Iroquois had conquered their southern neighbors, the Andastes, who had long held their ground against them, and at one time threatened them with ruin. The hands of the confederates were now free; their arrogance was redoubled by victory, and, having long before destroyed all the adjacent tribes on the north and west, [3] they looked for fresh victims in the wilderness beyond. Their most easterly tribe, the Mohawks, had not forgotten the chastisement they had received from Tracy and Courcelle. They had learned to fear the French, and were cautious in offending them; but it was not so with the remoter Iroquois. Of these, the Senecas at the western end of the "Long House," as they called their fivefold league, were by far the most powerful, for they could muster as many warriors as all the four remaining tribes together; and they now sought to draw the confederacy into a series of wars, which, though not directed against the French, threatened soon to involve them. Their first movement westward was against the tribes of the Illinois. I have already described their bloody inroad in the summer of 1680. [4] They made the valley of the Illinois a desert, and returned with several hundred prisoners, of whom they burned those that were useless, and incorporated the young and strong into their own tribe. [3] Jesuits in North America. [4] Discovery of the Great West. This movement of the western Iroquois had a double incentive, their love of fighting and their love of gain. It was a war of conquest and of trade. All the five tribes of the league had become dependent on the English and Dutch of Albany for guns, powder, lead, brandy, and many other things that they had learned to regard as necessities. Beaver skins alone could buy them, but to the Iroquois the supply of beaver skins was limited. The regions of the west and north-west, the upper Mississippi with its tributaries, and, above all, the forests of the upper lakes, were occupied by tribes in the interest of the French, whose missionaries and explorers had been the first to visit them, and whose traders controlled their immense annual product of furs. La Salle, by his newly built fort of St. Louis, engrossed the trade of the Illinois and Miami tribes; while the Hurons and Ottawas, gathered about the old mission of Michillimackinac, acted as factors for the Sioux, the Winnebagoes, and many other remote hordes. Every summer they brought down their accumulated beaver skins to the fair at Montreal; while French bush-rangers roving through the wilderness, with or without licenses, collected many more. [5] [5] Duchesneau, Memoir on Western Indians in N. Y. Colonial Docs., IX. 160.