Egypt, Ancient: ChronologyThe relative chronology of ancient Egypt is centered on a structure of dynasties, or royal houses, akin to the European Windsors, Hohenzollerns. Bourbons, or Habsburgs. These dynasties are taken from a history of Egypt, the Aegyptiaka, written in Greek by the Egyptian priest, Manetho, for the Macedonian king of Egypt. Ptolemy III, around 300BCE. This work is now lost, but excerpts survive in the works of later antique authors. Manetho divided the royal succession into thirty dynasties, and although there are numerous problems with his system, it is retained by Egyptologists to this day as the most straightforward way of delineating the progress of ancient Egyptian civilization.
These dynasties are usually grouped into periods and kingdoms corresponding to distinct phases in the country's political or cultural evolution. Thus, the Old Kingdom embraces the third through sixth dynasties, the time occupied by the great pyramid builders, while the Middle Kingdom, comprising the eleventh, twelfth, and thirteenth dynasties, represents a reunification of the country, consolidation and cultural development, and its decline. The New Kingdom (the eighteenth through the twentieth dynasties) is the era of Egypt's imperial power in Asia, seeing the construction of an empire that extended from the Sudan to the Euphrates. The three Intermediate Periods, following each of the Kingdoms' periods, highlight centuries during which central authority was eroded, accompanied in some cases by foreign rule of parts of the country...