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The American Civil War ( 1861 – 1865 ) was unusual for at least two reasons : it was fought around regional identities as well as political ideologies , and it ended through a war of attrition , rather than with a decisive battle over control of the capital , as was the norm .
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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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