Expo

Expo is the general term, used since the second half of the XXI century, applied to international exhibitions. It is commonly used to name commercial fairs but it is mainly associated with the international exhibitions organized by the International Exhibitions Bureau (BIE).

The 1988 BIE Protocol defines an exhibition as follows: "An exhibition is a display which, whatever its title, has as its principal purpose the education of the public: it may exhibit the means at man’s disposal for meeting the needs of civilisation, or demonstrate the progress achieved in one or more branches of human endeavour, or show prospects for the future"

In particular, following the BIE rules, Expo could refer to:
 * Universal exhibitions, also known as World's fair, World Expo or Registered exposition
 * International exhibitions, also known as Specialized exhibition or Recognized exposition
 * Horticultural exhibitions

The terms exhibition and exposition are equally used. Within this wiki we will primarily use the bold naming listed here above.