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Wealth from trade resulted in a Golden Age of potlatch art in the late 19th century , but to curb this perceived extravagance , the Canadian government outlawed the potlatch and other ceremonies with the Canadian Indian Act of 1884 , which contributed to a decline in artistic production , some say .
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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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