What characteristics did all three of the egyptian kingdoms have in common?

Pharaohs, Architecture, Trade.

Explanation:

The three of the Egyptian kingdoms (Old, Middle, and New) flourished with the help of the Nile river, became the source of providing fresh water and fishing along with trade-in kingdoms. Trade became the main source of importing and exporting goods and bringing ideas in the Egyptian Kingdom. Each of the kingdoms in Egypt had Pharaohs along with their capitals. Culture and religion remained strong in the lives of Egyptians along with their belief of Pharaohs as a true representation of their gods. All of the three periods had a monarchical rule, with strong bureaucracy. They also constructed pyramids and temples, reflects their architectural skills and knowledge of Cosmos.