c. 900 BC — Geometric period of vases starts in Ancient Greece.
c. 900 BC — The inhabitants of the Aegean region establish small, distinct groups in valleys, on coastal plains and on islands, living in self-sufficient, close-knit communities but all speaking some form of the same language.
c. 900 BC — San Lorenzo, the center of early Olmec culture, is destroyed, probably by migrating peoples from the north, and power passes to La Venta in Tabasco.
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