PREHISTORY (2 ago 39881 ano antes da era comum – 2 ago 38515 ano antes da era comum)

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period comprises from the origin of man or first hominids until the appearance of the first written testimonies. Approximately 3300 b.c. Sumer in Mesopotamia, the Indus valley civilization, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records..

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