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The style grew in popularity in the 1970 s with the approach of the United States Bicentennial and was introduced to high fashion by Ralph Lauren in his fall 1978 Western-themed collection .
 United States Bicentennial, Ralph Lauren
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:
 United States Bicentennial, Ralph Lauren