 The Gallinazo group site was the primary center of the valley during this time and most likely the seat of regional leadership.The Early Intermediate period in Virú Culture was marked by import social (increase in population size), economic (increase in population size), and political (creations of a unified valley command) transformations.These include an increase in the overall number of settlements in the valley, the extension of the total area under cultivation, the construction of new irrigation canals, and the establishment of four-tiered administrative system.