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World expo
The World Expo is a large-scale international exhibition sponsored by the government of one country, with participation by a number of countries and international organizations.
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BIE
BIE, which is the abbreviation for Bureau International des Expositions, is an intergovernmental organization created to supervise and ensure the application of Convention Relating to International Exhibvitions and to regulate the World Expo.
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Classification of world expositions
The Registered International Exhibitions may occur every five years since 2000, lasting six months, for example, the Expo 2010 in Shanghai China and Expo 2015 in Milan Italy.