The International Exhibitions Bureau (BIE) is an intergovernmental international convention organization that originated in France in 1928 under the Diplomatic Convention; it was formally established in 1931 and is headquartered in Paris. The main responsibilities of the BIE are: to supervise and guarantee the implementation, coordination and management of the Convention on International Exhibitions; to examine the bids of the countries bidding to host the Expo and to guarantee the level of the Expo;