Evropada eng uzun daryo - taxminan 2 860 kilometr (1 780 mil) uzunlikdagi Donub. U ko'plab mamlakatlar, shu jumladan Germaniya, Avstriya, Vengriya va Ruminiyadan oqadi. Osiyoda Nil va Amazonka qo'shimcha ravishda bir nechta muhim daryolar mavjud.
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