 Some authors estimate the urban area of Tollan-Xicocotitlan at the time was between 5 and 16 km², with a population of between 16,000 and 55,000 people.During this phase the monumental space that constitutes the Tula archaeological zone was consolidated in two pyramidal bases, two courts for the ballgame and several palaces occupied by the Toltec elite.By this time, Tollan-Xicocotitlan had become not only the nexus of the Mesoamerican commercial networks, it also hosted a military-theocratic elite who imposed their rule in various parts of Mesoamerica, whether by military conquest or political alliance, or by establishing colonies in strategic places.