<P> The Early Dynastic Period was approximately contemporary to the early Sumerian - Akkadian civilisation of Mesopotamia and of ancient Elam . The third - century BC Egyptian priest Manetho grouped the long line of pharaohs from Menes to his own time into 30 dynasties , a system still used today . He chose to begin his official history with the king named `` Meni '' ( or Menes in Greek ) who was believed to have united the two kingdoms of Upper and Lower Egypt ( around 3100 BC ) . </P>
<P> The Early Dynastic Period was approximately contemporary to the early Sumerian - Akkadian civilisation of Mesopotamia and of ancient Elam . The third - century BC Egyptian priest Manetho grouped the long line of pharaohs from Menes to his own time into 30 dynasties , a system still used today . He chose to begin his official history with the king named `` Meni '' ( or Menes in Greek ) who was believed to have united the two kingdoms of Upper and Lower Egypt ( around 3100 BC ) . </P>
when did egypt began to develop into a kingdom
when did egypt began to develop into a kingdom
3100 BC
3100 BC