2555
Much more important was the domestic slave trade , which boomed as the Deep South was developed in new cotton plantations .
 location: Deep South
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Deep South 
Answer:
 location: Deep South