人类在靠近赤道的中美洲生存下来。以后也有遍及整个北美的冰冻期。北美土著被一波一波地灭绝。玛雅，印加，阿兹特克，都在中美洲

来源: thore 于 2025-12-05 11:49:33 [旧帖] [给我悄悄话] 本文已被阅读：次

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