251387
From then through the 1780s , he was a key figure in encouraging westward expansion by Anglo-American settlers past the Appalachian barrier , as he wanted to sell his land in parcels for development .
 None
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:  
Answer:
 None