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Korotayev and coauthors have revealed a rather significant correlation between the level of literacy in the early 19th century and successful modernization and economic breakthroughs in the late 20th century , as " literate people could be characterized by a greater innovative-activity level , which provides opportunities for modernization , development , and economic growth " .
 Korotayev
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Korotayev