The Queen of Sheba: A Queen of Egypt and Ethiopia?
Josephus clearly identifies the queen who visited Solomon as ‘the woman who ruled Egypt and Ethiopia,’ and tells us that her name was Nikaulis.
The Old and the Restless: The Egyptians and the Scythians in Herodotus' Histories
On a historiographical level, if we look at all the ethnographic material in the Histories, it appears that Herodotus wishes the reader to view the world and its peoples in a sort of grid. Scythia and Egyptians are the extremes (in several ways) and other central cultures like the Greeks and Persians fall into place between them.