Periodization of ancient Egypt

The periodization of ancient Egypt is the use of periodization to organize the 3,000-year history of ancient Egypt. The system of 30 dynasties recorded by third-century BC Greek-speaking Egyptian priest Manetho is still in use today; however, the system of "periods" and "kingdoms" used to group the dynasties is of modern origin (19th and 20th centuries CE). The modern system consists of three "Golden Ages" (Old, Middle, and New Kingdoms), interspersed between "intermediate periods" (often, though not always, considered times of crisis or Dark Ages) and early and late periods.