History of ancient Egypt
Ancient Egypt was an ancient civilization of eastern North Africa, concentrated along the lower reaches of the Nile River in what is now the modern country of Egypt. It was part of a larger complex of civilizations, the Nile Valley Civilizations, of which regions south of Egypt (in today’s Sudan, Eritrea, Somalia, and Ethiopia) are a part. Egyptian civilization coalesced around 3150 BC[1] with the political unification of Upper and Lower Egypt under the first pharaoh, and it developed over the next three millennia.Its history occurred in a series of stable Kingdoms, separated by periods of relative instability known as Intermediate Periods. Ancient Egypt reached its pinnacle during the New Kingdom, after which it entered a period of slow decline.