The BIE "was established by a diplomatic international Convention, signed in Paris, in 1928. Its function is to regulate the frequency and quality. ... [of]
all international exhibitions of a non-commercial nature (other than fine art exhibitions) with a duration of more than three weeks, which are officially organised by a nation." Provides a BIE history, governing legislation, list of world fairs and horticultural exhibitions, and more. In English and French.