Of all the ancient historical names for the country we now know as Sudan, I can't say that Sudan was a good choice.
The land south of Egypt, beyond the first cataract of the Nile, was known to the ancient world by many names: Ta-Seti, or Land of the Bow, so named because the inhabitants were expert archers; Ta-Nehesi, or Land of Copper; Ethiopia, or Land of Burnt Faces, from the Greek; Nubia, possibly derived from an ancient Egyptian word for gold, which was plentiful; and Kush, the kingdom that dominated the region between roughly 2500 B.C. and A.D. 300. In some religious traditions, Kush was linked to the biblical Cush, son of Ham and grandson of Noah, whose descendants inhabited northeast Africa.
From the Smithsonian Magazine.