63875
Independent Charleston slave traders like Joseph Wragg were the first to break through the monopoly of the Royal African Company , pioneering the large-scale slave trade of the 18th century .
 Charleston, Joseph Wragg, Royal African Company
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Charleston, Joseph Wragg, Royal African Company