How did the Inca conquest change the use of Quichua in Ecuador?

During the Inca conquest of the region now known as Ecuador, the Inca rulers spread the use of Quichua as a lingua franca across the territory.12

While the Inca conquest had a relatively spotty cultural impact in other areas, the promotion of Quichua served to unify communication across the diverse chiefdoms that existed prior to their arrival. This linguistic shift occurred alongside other imperial strategies, such as ordering large forced migrations in areas where resistance to Inca rule was particularly strong.12