The longest Rivers of the World

River Nile:

The River Nile is in Africa. It originates in Burundi, south of the equator, and flows northward through northeastern Africa, eventually flowing through Egypt and finally draining into the Mediterranean Sea.

Continent Africa
Countries it flows through Egypt, Ethiopia, Sudan, Burundi
Length 6,695 kilometres (4,160 miles)
Number of tributaries 2
Source Burundi, central Africa
Mouth Egypt into the Mediterranean Sea
Where is the source of the Nile?
The Ruvyironza River of Burundi is regarded as the true and ultimate source of the Nile. The Ruvyironza is one of the upper branches of the Kagera River, which follows the Rwanda-Tanzania and Uganda-Tanzania borders into Lake Victoria.
The source of the Nile is sometimes considered to be Lake Victoria, but the lake itself has feeder rivers of considerable size like the Kagera River.
Interesting Facts about the Nile river:
• The Nile River is the longest river in the world.
• The Nile flows into the Mediterranean Sea.
• The largest source of the Nile is Lake Victoria.
• The Nile has a length of about 4,160 miles (6,695 kilometres).
• Its average discharge is 3.1 million litres (680,000 gallons) per second.
• The Nile basin is huge and includes parts of Tanzania, Burundi, Rwanda, Congo (Kinshasa), Kenya.
• The Nile receives its name from the Greek Neilos, which means a valley or river valley.
The River Amazon:

The Amazon river runs 4,000 miles from the Andes to the sea, and is longer than any river but the Nile. The Amazon River is therefor the second longest river in the world. It is also the largest in terms of the size of its watershed, the number of tributaries, and the volume of water discharged into the sea. The vast Amazon basin covers more than two and a half million square miles, more than any other rainforests. No bridge crosses the river along its entire length.
Continent South America
Countries it flows through Peru, Brazil, Venezuela, Ecuador, Bolivia
Length 6400 kilometres (4,000 miles)
Number of tributaries Over 200
Source Lago Villafro in the Andes Mountains, Peru
Mouth Brazil into the Atlantic Ocean (delta)
Amazon
Amaz(on)ing facts on the Worlds greatest river!
Amazon
This mightiest of rivers forms a network of water channels that permeates nearly half of South America.
The River Yangtze(Chang Jiang):
The River Yangtze, also called the Chang Jiang, is the longest river in China and Asia and the third longest in the world after the Amazon in South America and the Nile in Africa. It has its source high in the snow-capped mountains of western China.
The Yangze river has over 700 tributaries but the principal tributaries are the Hun, Yalong, Jialing, Min, Tuo Jiang, and Wu Jiang.
Continent Asia
Countries it flows through China
Length 6,240 kilometres (3,900 miles)
Number of tributaries Over 700
Source Kulun mountains
Mouth Yellow Sea at the port of Shanghai

The Mississippi River :

The Mississippi River is the second longest river in the United States, with a length of 2,320 mi (3,734 km) from its source in Lake Itasca in Minnesota to its mouth in Gulf of Mexico. The longest is its tributary the Missouri River measuring 2,341 mi (3,767 km).
Country USA
States it flows through Montana, North Dakota, South Dakota, Nebraska, Kansas, Illinois, Alabama, Louisiana, Missouri, Minnesota
Length 6020 kilometres
Number of tributaries 250
Source Lake Itasca in Minnesota
Mouth Louisiana into the Gulf of Mexic