sentences:  There is evidence that the Incas failed to fully impose their culture, which explains differences in custom, religion and language of Ancash with respect to Cuzco.The people of the eastern highlands of Ancash would have submitted, with little resistance to the invaders, in order to get rid of the Incas.Chacas Foundation
  
  The first Spanish settlement, which was an Indian Reduction was founded between 1575 and 1578 approximately.