What is "pachacuti"

Pachacuti Inca Yupanqui or Pachacutec (in hispanicized spellings) or Pachakutiq Inka Yupanki ( Quechua) was the ninth Sapa Inca (1438–1471/1472) of the Kingdom of Cusco which he transformed into the Inca Empire (Tawantinsuyu). Most archaeologists now believe that the famous Inca site of Machu Picchu was built as an estate for Pachacuti.

In Quechua Pachakutiq means "he who overturns space and time", and Yupanki means "with honor". During his reign, Cusco grew from a hamlet into an empire that could compete with, and eventually overtake, the Chimú. He began an era of conquest that, within three generations, expanded the Inca dominion from the valley of Cusco to nearly the whole of western South America.