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The 1940 s and the 1950 s in Yugoslavia were marked by colonisation of settlements where the displaced Germans used to live by people from the mountainous parts of Bosnia and Herzegovina , Serbia and Montenegro , and migrations to larger cities spurred on by the development of industry .
 Yugoslavia, Bosnia and Herzegovina, Serbia, Montenegro
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yugoslavia, Bosnia and Herzegovina, Serbia, Montenegro