The Anasazi culture-the most widespread of the Southwest pueblo cultures-was known for its extensive presence in the ""Four Corners"" region

The Anasazi refused to incorporate a rigid class structure.

Explanation:

The Anasazi cultural region lied across the southern Colorado Plateau and the upper Rio Grande drainage.

The Anasazi cultural region lied across the southern Colorado Plateau and the upper Rio Grande drainage. It was also spread in the northeastern Arizona, New Mexico, southwestern Colorado and southeastern Utah.

Their government structure was very loose and they were organised into clans governed by the leaders called Headmen. Each clan chose a Headman that used to represent them at village councils or tribal meetings. The headmen were the most powerful among the tribe leaders.