What is "antisuyu"

Antisuyu ( Quechua anti east, suyu region, part of a territory, each of the four regions which formed the Inca Empire, "eastern region") was the eastern part of the Inca Empire which bordered with modern-day Upper Amazon region where the Anti inhabited. Antis is a collective term for the many varied ethnic groups living in the Antisuyu such as, for example, the Asháninka or the Tsimané. The second smallest of the suyu, Antisuyu, was located northwest of Cusco in the high Andes. Indeed, it is the root of the word “Andes.” Along with Chinchaysuyu, it was part of the Hanan Suyukuna or "upper quarters" of the empire.