The Fourth Dynasty of ancient Egypt (notated Dynasty IV) is characterized as a "golden age" of the Old Kingdom of Egypt. Dynasty IV lasted from to 2494 BC. It was a time of peace and prosperity as well as one during which trade with other countries is documented. The Fourth Dynasty heralded the height of the pyramid-building age. The relative peace of the Third Dynasty allowed the Dynasty IV rulers the leisure to explore more artistic and cultural pursuits. King Sneferu's building experiments led to the evolution from the mastaba-styled step pyramids to the smooth sided “true” pyramids, such as those on the Giza Plateau. No other period in Egypt's history equaled Dynasty IV's architectural accomplishments. Each of the rulers of this dynasty (except for Shepseskaf, the last) commissioned at least one pyramid to serve as a tomb or cenotaph. The Fourth Dynasty was the second of four dynasties that made up the "Old Kingdom". King Sneferu, the first king of the Fourth Dynasty, held territory from ancient Libya in the west to the Sinai Peninsula in the east, to Nubia in the south. It was a successful period and this era is known for its advancement and concentrated government, as seen in the organized building of pyramids and other monuments. Knowledge of the Old Kingdom comes mainly from these structures and objects discovered in the desert cemeteries of Giza. Rulers Summary Sneferu Sneferu, lauded as "Bringer of Beauty", "Master of All Justice", and "Ruler of Lower and Upper Nile", was the first pharaoh of the fourth dynasty. He descended from a family in Middle Egypt that lived near Hermopolis, and most likely ascended to the throne by marrying a royal heiress. There is still debate as to who his father was, with the credit often being given to Huni, but this cannot be confirmed due to the break in dynasties. His mother, Meresankh I was either a lesser wife or concubine of Huni. Egypt in the Third Millennium BC was, by all accounts, a land of peace and plenty. Elites commonly ate fattened ducks and geese, and they wore fine white linens. Until his reign, Egyptian kings were thought to be worldly incarnations of Horus, obtaining total deification exclusively in death. Sneferu was the first king to proclaim that he was the embodiment of Ra, another sun deity. Khufu would pursue his father's path, taking the name Son of