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|  | World rivers
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 6,853 kms (4,258 miles)
 6,853 kms (4,258 miles) 6,992 kms (4,345 miles)
 6,992 kms (4,345 miles) 6,300 kms (3,917 miles)
   6,300 kms (3,917 miles) 6275 kms (3,902 miles)
  6275 kms (3,902 miles) 5,539 kms (3,445 miles)
  5,539 kms (3,445 miles) is Europe's 2nd longest river and flows through many cities including four national capitals (Vienna, Bratislava, Budapest, and Belgrade).
  is Europe's 2nd longest river and flows through many cities including four national capitals (Vienna, Bratislava, Budapest, and Belgrade). is bigger than the rest combined.
  is bigger than the rest combined. . On the northern edge of this lake, water pours over a waterfall, known as the Ripon Falls, into a narrow opening which many people believe is the beginning of the River Nile.
. On the northern edge of this lake, water pours over a waterfall, known as the Ripon Falls, into a narrow opening which many people believe is the beginning of the River Nile. forms a natural border between Mexico and USA (also part of  the border between Texas and New Mexico).
  forms a natural border between Mexico and USA (also part of  the border between Texas and New Mexico). is called different names depending on the country it flows through. It is called Rhein in Germany; Rhine in France and Rijn in Netherlands.
 is called different names depending on the country it flows through. It is called Rhein in Germany; Rhine in France and Rijn in Netherlands. is the longest river in Europe, flowing through Central Russia and into the Caspian Sea.
  is the longest river in Europe, flowing through Central Russia and into the Caspian Sea. river basin has the highest population of any river basin in the world. It contains over 400 million people.
  river basin has the highest population of any river basin in the world. It contains over 400 million people. indicates that the link will show the location on the map.
 indicates that the link will show the location on the map.