102960
During the late twentieth century folk music was crucial in Hungary , Romania , Czechoslovakia and Yugoslavia as it allowed ethnicities to express their national identity in a time of political uncertainty and chaos .
 Hungary, Romania, Czechoslovakia, Yugoslavia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Hungary, Romania, Czechoslovakia, Yugoslavia