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Please select a historical period: 25 years ago / 50 years ago / 80 years ago / 125 years ago / 150 years ago 250 years ago / 400 years ago / 700 years ago / 1,200 years ago 1,500 years ago / 2,000 years ago / 4,000 years ago / 10,000 years ago 4,000 Years Ago in Central America In the Tehuacan Valley in Mexico, at this time there was a gradual shift from foraging to crop growing, a process that may have taken over thousands of years. Meanwhile, in what is now Guatemala the advanced agricultural civilization the Ocos people arose. Named after an archaeological site Ocos village, these people lived in large villages, and while they did not use writing, they made sophisticated pottery.       back to map 25 years ago / 50 years ago / 80 years ago / 125 years ago / 150 years ago 250 years ago / 400 years ago / 700 years ago / 1,200 years ago 1,500 years ago / 2,000 years ago / 4,000 years ago / 10,000 years ago