Longest river in the world: The world ’ s

The world ’ s longest rivers are defined as the longest natural streams whose water flows within a channel, or streambed, with defined banks. They tend to have extensive river systems, which include tributaries to the main river channel, that drain large portions of Earth’s continents. The Nile is the world ’s longest river , spanning approximately 4,132 miles (6,650 km) as it flows from East African headwaters through eleven countries to the Mediterranean Sea. The tenth longest river in the world , the Amur River , also called the Heilong Jiang, flows along the boundary between northeastern China and Russia. The main border between northeastern China and the far east of Russia is separated by the Amur River . These are world 's largest rivers . They are ten longest and biggest rivers by ranked regarding to the length, drainage area, and their average discharge.