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Several factors affected the visibility of descendants of this diaspora in 21st - century Arab societies : The traders shipped more female slaves than males , as there was a demand for them to serve as concubines in harems in the Arabian Peninsula and neighboring countries .
 Arabian Peninsula
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Arabian Peninsula