| Chapter Summary |
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| l | American
societies during the post-classic |
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| era remained
isolated from other civilizations. |
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| l | The societies
continued to show great |
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| diversity, but
there were continuities. |
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| l | American
civilizations were marked by |
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| elaborate
cultural systems, highly developed |
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| agriculture, and
large urban and political |
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| units. |
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