I'm pretty sure that these are correct, I'm sorry if they end up being wrong
Answer:
Early Dynastic period: The building of the pyramids, the development of the practice of mummification, the unification of Upper Egypt and Lower Egypt.
Old Kingdom: the specialization of labor and the conquering of Nubia and Libya
It’s B - Liu Bang for sure
The economy of Egypt was a highly centralised economy focused on import substitution under President Gamal Abdel Nasser.