c. 2550 BC: Egyptian rulers contact Western Desert oases, such as Dakhla Oasis.
c. 2550 BC: About this time, Mesannepada is king of Ur (followed by his son, A-annepadda) who founds the First dynasty of Ur and overthrows the last king of Uruk, as well as Mesalim of Kish.
c. 2550 BC – 2400 BC: Great Lyre with bull's head, from the tomb of King Meskalamdug, Ur (modern Muqaiyir, Iraq, is made. It is now kept at University of Pennsylvania Museum of Archaeology and Anthropology, Philadelphia.
c. 2544 BC: Khafra died.
c. 2533 BC: Menkaura started to rule in Ancient Egypt.
c. 2532 BC: Pharaoh Khafra dies (other date is 2544 BC).
c. 2532 BC: Pharaoh Menkaura starts to rule (other date is 2533 BC).
c. 2515 BC: Menkaura died.
c. 2510 BC – 2460 BC: Ti watching a hippopotamus hunt, tomb of Ti, Saqqara, Fifth dynasty of Egypt, is made. Discovered by Frencharcheologist Auguste Mariette in 1865.
c. 2503 BC: Pharaoh Menkaura dies (other date is 2515 BC).
c. 2500 BC: The legendary line of Sanhuangwudi rulers of China is founded by Huang Di.
c. 2500 BC: The construction of the stone circle at Stonehenge begins and continues for the next five hundred years.
c. 2500 BC: "Menkaura and a Queen, perhaps his wife, Queen Khamerernebty II" sculpture, later found at Giza. Fourth Dynasty. It is now in Museum of Fine Arts, Boston.