Complex sentence: The Pueblo Alto road network functioned between 1050 and 1140, and was primarily used for access to watering holes, terraced farming areas, and to facilitate interaction between Pueblo Alto and great houses like Pueblo Bonito and Chetro Ketl.
Split into simpler sentences: The Pueblo Alto road network functioned between 1050 and 1140. It facilitated access to watering holes, terraced farming areas, and enabled interaction between Pueblo Alto and great houses like Pueblo Bonito and Chetro Ketl.