The Illinois, like many Native American groups, sustained themselves through agriculture, hunting, and fishing. A partially nomadic group, the Illinois often lived in longhouses and wigwams, according to the season and resources that were available to them in the surrounding land. While the men usually hunted or participated in war, the women cultivated and processed their crops, created tools and clothing from game, and preserved food in various ways for storage and travel. Not officially a Confederation, the villages were led by one Great Chief from which branched several village chiefs that led each individual clan. The Illinois people eventually declined because of losses to infectious disease and war, mostly brought through the arrival of French colonists. Eventually, they reorganized under the name of the Confederated Peoria. They are now known as the federally recognized "Peoria Tribe of Indians" and reside in present-day Oklahoma.