Simplify the following text for a Grade 11 native English-speaking person.
Original: Pachacuti Inca Yupanqui ( or Pachacutec ; Quechua Pachakutiq , whose name means `` He who remakes the world '' was the ninth Sapa Inca ( 1438-1471\/1472 ) of the Kingdom of Cuzco , which he transformed into an empire , Tawantinsuyu .
Simplified: Pachacuti Inca Yupanqui ( or Pachacutec ) was the ninth Sapa Inca ( 1438-1471\/1472 ) of the Kingdom of Cusco , which he transformed into the empire Tawantinsuyu , or the Inca Empire .