Answer:
The three kingdoms were the Old, Middle, and New Kingdoms. The Ancient Egyptian civilization begins. The first Pharaoh of Egypt, Menes, united the Upper and Lower parts of Egypt into a single civilization.
While experts believe the low water in the Nile was the primary influence for the fall of ancient Egypt, during the later period of the empire's existence, a two- to three-decade period was marked by erratic flooding of the Nile, destroying crops and starving the people dependent upon them.
Explanation:
