5872
Since the arrival of the Loyalists as refugees from the American Revolution in the 1780 s , historians have identified a constant theme of Canadian fear of the United States and of " Americanization " or a cultural takeover .
 United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United States