World Fairs, also known as Expositions or Expos, are large public exhibitions that showcase achievements in various fields, including technology, culture, and industry. These events often feature pavilions from different countries, allowing nations to present their innovations and cultural heritage to a global audience. The first recognized World Fair was the Great Exhibition held in London in 1851. Typically held every few years, World Fairs aim to promote international cooperation and understanding. They provide a platform for countries to share ideas and advancements, often leading to significant technological developments. Notable examples include the 1964 New York World's Fair and the Expo 2020 held in Dubai.