The Nile river is the longest river in the world, though its hard to say if its "navigable" or not given that at two points in the river it has large rapids and waterfalls.
Missouri at 2,540 miles
Dams and cataracts.
The state of Mississippi is the 32nd largest of the US states. (The Mississippi River is the longest single river in the US. The Jefferson-Missouri-Lower Mississippi combination is the longest combined flowing river, 4th longest in the world, although much of the western Missouri is not navigable.)
The St. Joe River in Idaho
The Nile River in Egypt is the longest river in the world.
The longest river in the world is the Nile river
No. Although the Murray River is the longest river in Australia, it is not the fourth longest river in the world.
The river in Ghana that is not navigable is called the Volta.
The fourth longest river in the world is the Mississippi river.
Navigable rivers in Jamaica include the Black River. The Rio Grande, Martha Brae River and the Great River are also navigable.
the Nile is the longest river
Egypt has the world's longest river, the Nile River.