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He crossed the country , initially traveling through the antebellum south on foot to New Orleans , then up the Mississippi River by boat , and finally joining a wagon train and heading west on the Oregon Trail to the Oregon Territory .
 New Orleans, Oregon, Oregon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 New Orleans, Oregon, Oregon