How many years passed between the incas settiling in cuzco and begenning to expand thire empires?

The Incas are believed to have settled in Cusco around the early 12th century, with their expansion beginning in the 15th century. This means that approximately 300 years passed between their initial settlement in Cusco and the start of their imperial expansion. The expansion notably accelerated under the leadership of Pachacuti, who reigned from 1438 to 1471.