His name is based on the ancient capital of the Egyptian Empire, Memphis.
The city has always been a part of the Egyptian Empire since the Pharaohnic period.
The history of the old Egyptian empire has been thoroughly studied and its technology, history and political system is widely known.
This helped make Nubia part of the Egyptian empire.
In particular, I draw your attention to the thousands of years of the Egyptian empire, during which significant innovation basically didn't happen.
The earliest recorded peace treaty was between the Hittite and Egyptian empires.
Writing was very important in maintaining the Egyptian empire, and literacy was concentrated among an educated elite of scribes.
He is often regarded as the greatest, most celebrated, and most powerful pharaoh of the Egyptian Empire.
Less than 150 years after Ramesses died the Egyptian empire fell and the New Kingdom came to an end.
This helped integrate Nubia into the Egyptian empire.