The document lists the top 10 longest rivers in the world by length and outflow countries. It then provides additional details on some other globally significant rivers not within the top 10, including the Volga, Danube, Ural, Rhine, Ganges River, Amu Darya, Indus, Shatt al-Arab, Mekong, and Brahmaputra rivers. The rivers discussed flow through multiple countries and regions around the world and discharge into various oceans and seas.