When did ancient Egypt begin?
History of ancient Egypt
Following Alexander's death in Babylon in 323 BC, a succession crisis erupted among his generals. Perdiccas ruled the empire as regent for Alexander's half-brother Arrhidaeus, who became Philip III of Macedon, and Alexander's infant son Alexander IV of Macedon. Perdiccas appointed Ptolemy, one of Alexander's closest companions, to rule Egypt in the name of the joint kings. However, as Alexander's empire disintegrated, Ptolemy soon established himself as ruler in his own right. Ptolemy successfully defended Egypt against an invasion by Perdiccas in 321 BC and consolidated his position in Egypt and the surrounding areas during the Wars of the Diadochi (322–301 BC). In 305 BC, Ptolemy took the title of Pharaoh. As Ptolemy I Soter ("Saviour"), he founded the Ptolemaic dynasty that was to rule Egypt for nearly 300 years.