As of the colonial period, Texas was largely divided between 6 culture groups. The Caddoan peoples occupied the area surrounding the entire length of the Red River, and at the time of initial contact with Europeans they formed four collective confederacies known as the Natchitoches, the Hasinai, the Wichita & the Kadohadocho (Caddo). Along the Gulf Coast region were the Atakapa tribes. Southward from the Atakapa, along the Gulf Coast to the Rio Grande river, at least one Coahuiltecan tribe (a culture group primarily from Northeast Mexico) was located. The Puebloan peoples, situated largely between the Rio Grande & Peco rivers were part of an extensive civilization of tribes that lived in what are now the states of Texas, New Mexico, Colorado & Utah. While the northernmost Puebloan groups faced a cultural collapse due to a drought, many of the southern tribes survive to the present. North of the Pueblos were the Apachean tribes who although commonly referred to as a single nation, were actually a culture group. Finally, north of the Apacheans, in the northern current-day Texas Panhandle region, were the Comanches.