Social organization
The different societies living in Kollasuyu in the mid-15th Century were organized into estates with different levels of social complexity. Local leaders were placed in charge of small territories, and the new political order required the division of valleys into two halves, each under its own authority. This kind of dual sociopolitical structure had been seen before in the region, but under the Inka it became more prevalent and was structured rigorously around the characteristic Cuzco system. During Tawantinsuyu rule, work was highly specialized within the mita or labor tribute system, with Inka subjects having to provide free periods of service to the State.