◆The Navajo The Navajo are now the largest Indian group in the United States.Anthropologists say that they migrated to the Southwest from Canada between 900 and 1200 A.D.They learned agriculture,weaving and sand painting drawing done with different colored sands)from neighbouring Indians.After the sheep was introduced in the 1600s,they became pastoralists.In 1868,the Navajos were settled on a reservation of about 64,000 square kilometres.The region was barren and could not support the growing of adequate food. The Navajo The Navajo are now the largest Indian group in the United States. Anthropologists say that they migrated to the Southwest from Canada between 900 and 1200 A.D. They learned agriculture, weaving and sand painting ( drawing done with different colored sands) from neighbouring Indians. After the sheep was introduced in the 1600s, they became pastoralists. In 1868, the Navajos were settled on a reservation of about 64,000 square kilometres. The region was barren and could not support the growing of adequate food