How did Egypt become united? who was able to accomplish this and how?

Menes sent an army down the Nile and defeated the king of Lower Egypt in battle. In this way Menes united the two kingdoms. Unification means the joining together of two separate parts, in the case, the two kingdoms. Menes, sometimes known as Narmer, became the first pharaoh.

It developed as a reaction to the impact of european colonialism in africa on peoples of african descent. in the  mid-20th century, activists in africa adopted pan-africanism as a rallying cry for independence from colonial rule. some african pan-africanists sought to unite the continent as one independenthope it was useful