World Expositions, also known as World Fairs, are large public exhibitions that showcase the achievements of nations. They often focus on a specific theme, such as technology, culture, or sustainability, and provide a platform for countries to display their innovations and ideas. These events attract millions of visitors and promote international cooperation and understanding. At a World Exposition, countries set up pavilions to highlight their unique contributions, such as art, architecture, and science. Famous examples include the 1851 Great Exhibition in London and the 1967 Expo 67 in Canada. These gatherings not only celebrate human creativity but also inspire future advancements.