Around the middle of the nineteenth century, early settlers arriving in eastern Colorado found Native Americans occupying the plains. The eastern plains were home to the Arapahoe and Cheyenne tribes, with occasional visits from northern Crow and Sioux tribes, while the Pawnee bordered to the east and the Kiowa and Comanche tribes to the southeast. Native Americans did not live in fixed towns, but traveled in villages of teepees that moved from place to place following the buffalo herds. Buffalo was the principal source of food, shelter, and clothing, and was also held in reverence as an integral part of religious ceremonies. Women did most of the work, providing meals, making clothing, tending children, and playing a primary role in moving camp, while men devoted themselves to hunting and war with other tribes. Farmers and ranchers migrating from eastern states pushed Native American tribes out of eastern Colorado. The Northern Arapahoe relocated to Wind River, Wyoming, some of the Northern Cheyenne settled in Montana, and the Southern Cheyenne and Southern Arapahoe moved to Oklahoma. Although Native Americans no longer inhabit the eastern plains of Colorado, their heritage remains in place names such as the Arikaree River and the counties of Cheyenne, Yuma, and Kiowa.