Expos, short for "Expositions," are large public exhibitions that showcase innovations, culture, and achievements from around the world. These events often feature pavilions from different countries, where visitors can explore unique displays, learn about new technologies, and experience diverse cultures. The first modern Expo, the Great Exhibition of 1851, was held in London and set the stage for future global gatherings. Today, Expos are organized by the Bureau International des Expositions (BIE) and occur every few years in various cities. They provide a platform for countries to promote their advancements in areas like sustainability, science, and art, fostering international collaboration and understanding.