At the same time Ancestral Puebloans constructed clusters of buildings in the Chaco Canyon site located in the State of New Mexico. Individual houses may have been occupied by more than 600 residents at any one time. Chaco Canyon was the only pre-Columbian site in the United States to build paved roads. Pottery indicates a society that was becoming more complex, turkeys for the first time in the continental United States were also domesticated. Around 1150 the structures of Chaco Canyon were abandoned, likely as a result of severe drought. There were also other Pueblo complexes in the Southwestern United States. After reaching climaxes native complex societies in the United States declined and did not entirely recover before the arrival of European Explorers.