About 3000 B.C.
King Narmer
It was difficult to unite the Fertile Crescent under one ruler cauae or effect ?
The pharaoh Narmer, also known as Menes, was the first to unite Egypt into one empire. However, later rulers, such as Ahmose of Thebes, also united Egypt.
Qin Shi Huang (秦始皇) was the first emperor/leader of China to fight and unite all parts of China as one country.
King Piye decided to invade Egypt and establish his rule there, becoming known as Egypt's 25th Dynasty ruler. He aimed to unite Egypt under his Nubian kingdom of Kush and bring stability to the region. This decision marked a significant moment in ancient Egyptian history, with the Nubians ruling over Egypt for nearly a century.
Narmer also known as Menes ruled upper Egypt and was able to control lower Egypt and unite them both.
so he can have it for himself
Upper and Lower Egypt.
menes
The U.S. Constitution.
He united Egypt in 31000 BC
they wore the double crown to symbolize their rule over Upper and Lower Egypt.