Universal Expositions, also known as World Expos, are large international exhibitions designed to showcase the achievements of nations. They provide a platform for countries to present their culture, technology, and innovations to a global audience. These events often feature pavilions from participating nations, highlighting their unique contributions and advancements. The first Universal Exposition was held in 1851 in London, known as the Great Exhibition. Since then, these events have occurred every few years in various cities around the world, such as Paris, New York, and Shanghai. Each exposition has a specific theme, focusing on topics like sustainability, technology, and cultural exchange.