The "Exposition Universelle" is a world's fair that showcases achievements in various fields, including art, technology, and culture. These exhibitions began in the mid-19th century and have been held in different cities around the world, with the first one taking place in 1851 in London. The events aim to promote international cooperation and innovation. Each exposition features pavilions from participating countries, displaying their unique contributions and advancements. Notable expositions include the 1889 event in Paris, which introduced the Eiffel Tower, and the 1967 fair in Montreal, which highlighted the Biosphere. These events have played a significant role in cultural exchange and global dialogue.