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He advocated a communal society based on Plato 's Republic united into a confederation made up of all the native tribes in the region , one that would play off the different colonizers , Spain , France , and England , in order to strengthen their hold on tribal land .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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