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Two of the original core objectives of the European Economic Community were the development of a common market , subsequently becoming a customs union , and a the free circulation of goods , capital , people , and services within the EU between its member states .
 European Economic Community, EU
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 European Economic Community, EU