Throughout it exitence of more than 150 year, the Expo will bring new knowledge from a pecific period of time and trend of development, reflecting the human civilization. The main attraction of the firt eion of the World Expo in 1851 in the Crytal Palace in London: almot 500 meter long palace built of cat iron and gla. Subequently, the participating countrie will offer imilar advantage to introduce from time to time every few year.
Today EXPO i the economic and cultural Olympiad of the world, a competition among nation, a well a among exhibitor from the private ector on a given ubject. At the ame time, it i about marketing countrie internationally. Expoition of the firt category lat a maximum of 6 month and may be held on an enormou area. But at a time when information a well a good can be had through the internet and other technologie, they remain a place of rendezvou and of authentic experience.