[Aztlan] Dating slash-and-burn agriculture

[Jules Siegel]

I posed this question in the "Mayas desaparecieron por cambio en clima 
de ciudades" thread, but no one has yet responded. I think it's an 
important issue, so I am repeating it in the hope of obtaining an answer.

How do we know when the Maya began to use slash-and-burn agriculture?

¿Como sabemos cuando los maya iniciaron la agricultura de tala y quema?

-- 
JULES SIEGEL Apdo. 1764, 77501-Cancun, Q. Roo, Mexico
http://www.cafecancun.com/bookarts

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