The term "Cradle of Civilization" is used for Egypt because of the contributions of the ancient Egyptians to the creation of the civilization. The term is also used for other ancient cultures, including Mesopotamia and Levant.
Egypt is one of the oldest continuous civilizations in the world, with archaeological excavations proving that pre-dynastic Egyptians inhabited the territory of the modern country since 6,000 B.C. Ancient Egypt reaches its heyday in the fourth millennium B.C. The ancient Egyptians made important contributions to the development of mathematics, astronomy, writing and engineering. Concentrating along the banks of the River Nile, Ancient Egypt was one of the first organized societies in history.