Article: ANCIENT MARINERS Strong evidence of Andean-Mexican seagoing trade as early as 600 A.D.

Archeologists studying the ancient empires of Central and South America have long noticed similarities in some pottery designs and food crops and wondered whether mariners from the Andean coast traded with their counterparts 2,000 miles to the north. Now, an MIT researcher says she has strong evidence they did.

Sophisticated and unique metalworking techniques, developed in South America as far as 1200 B.C., suddenly appeared in Western Mexico in about 600 A.D. -- without ever being seen anywhere in between. The only reasonable explanation, according to archeologist Dorothy Hosler, is seaborne trade.

As far back as the Spanish conquest, it was clear that the South American cultures had the ...

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