Main Page | See live article | Alphabetical index (5th millennium BC - 4th millennium BC - 3rd millennium BC - other millennia Events: City of Ur in Mesopotamia (40th century BC). Naqada culture on the Nile, 4000-3000 BC. Civilization of Crete (38th century BC). Civilization of Sumeria, cities-state (36th century BC). First to Fourth dynasty of Kish in Mesopotamia. Beginning of desertification of Sahara ( 35th century BC). Unification of Egypt, 3100 BC. Significant persons: Ötzi the Iceman lived circa 3300 BC. Ur-nina first king of Lagash in Mesopotamia (31st century BC). Inventions, Discoveries, Introductions Beginings of urbanisation in Mesopotamia with the Sumerians. First cities in Egypt (35th century BC). First writings in the cities of Uruk and Susa (cuneiform writings). Hieroglyphs in Egypt. Potter's wheel used in Middle East. Sails used in the Nile. Centuries 40th century BC 39th century BC 38th century BC 37th century BC 36th century BC 35th century BC 34th century BC 33rd century BC 32nd century BC 31st century BC This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.