The Iroquois were second to no other Native Americans N of Mexico in political organization, statecraft, and military prowess. In the mid-17th cent. the Iroquois Confederacy, equipped with Dutch firearms, made its united force felt. It dispersed the Huron in 1649, the Tobacco and the Neutral Nation in 1650, the Erie in 1656, the Conestoga in 1675, and the Illinois c.1700. Depleted by continual warfare, they increased the population by the wholesale adoption of alien tribes, so that by the end of the 17th cent. they numbered some 16,000. At this time they controlled the territory bounded by the Kennebec River, the Ottawa River, the Illinois River, and the Tennessee River. Their conquests were checked in the west by the Ojibwa, in the south by the Cherokee and the Catawba, and in the north by the French.