The southern part of Ancient Egypt was called

(Lower Egypt/Upper Egypt)

The answer is Lower Egypt.

Explanation:

The southern part of Ancient Egypt was called Lower Egypt.

Answer: The southern part of Ancient Egypt is called Upper Egypt.

Explanation: Ancient Egypt was divided into two regions, namely Upper Egypt and Lower Egypt. To the north was Lower Egypt, where the Nile stretched out with its several branches to form the Nile Delta. To the south was Upper Egypt, stretching to Aswan.