In this manner, why is it called Upper and Lower Egypt?
The Nile River flows from south to north. Therefore, the upper Nile is south of the lower Nile. Upper and Lower Egypt were named because they were on the upper and lower Nile, respectively. So, Upper Egypt is south of Lower Egypt because the upper Nile is south of the lower Nile.
What city became the capital of Egypt after the unification of Upper and Lower Egypt?
Mentuhotep II wore the Double Crown of Egypt, which represented the unification of Upper and Lower Egypt. Thebes, a city in Upper Egypt, became the capital city of the pharaohs of the Middle Kingdom. The Middle Kingdom was a time of achievements for the ancient Egyptians.