Ancient Egypt was an ancient civilization of eastern North Africa, concentrated along the lower reaches of the Nile River in what is now the modern country of Egypt. Egyptian civilization coalesced around 3150 BCE (according to conventional Egyptian chronology)[1] with the political unification of Upper and Lower Egypt under the first pharaoh.[2] The many achievements of the ancient Egyptians include the quarrying, surveying and construction techniques that facilitated the building of monumental pyramids, temples, and obelisks; a system of mathematics; a practical and effective system of medicine; irrigation systems and agricultural production techniques; the first known ships;[3] Egyptian faience and glass technology; new forms of literature; and the earliest known peace treaty

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