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He made urban poverty a chief concern of his campaign , which in part led to enormous crowds that would attend his events in poor urban areas or rural parts of Appalachia .
 Appalachia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Appalachia