The length of the Amazon river is 6,575 km from its source in Mt.

Local trade along the river was carried on by the English successors to the Amazonas Company—the Amazon Steam Navigation Company—as well as numerous small steamboats, belonging to companies and firms engaged in the rubber trade, navigating the Negro, Madeira, Purús and many other tributaries,By the turn of the 20th century, the exports of the Amazon basin were Since colonial times, the Portuguese portion of the Amazon basin has remained a land largely undeveloped by agriculture and occupied by indigenous people who survived the arrival of European diseases.
The Brazilian Amazon's principal commercial city, Pará (now Belém), had from 10,000 to 12,000 inhabitants, including slaves.

The main river is navigable for large ocean steamers to Annual flooding occurs in late northern latitude winter at high tide when the incoming waters of the The Amazon River originated as a transcontinental river in the Eleven to ten million years ago, waters worked through the Paralleling the Amazon River is a large aquifer, dubbed the More than one-third of all known species in the world live in the Along with the Orinoco, the Amazon is one of the main habitats of the The Amazon and its tributaries are the main habitat of the The Amazonian fish fauna is the centre of diversity for Freshwater microbes are generally not very well known, even less so for a pristine ecosystem like the Amazon.



The length of the Nile River is 7,088 km from its source in Nyungwe National Park of Rwanda.

Using The Amazon basin, the largest in the world, covers about 40% of South America, an area of approximately 7,050,000 square kilometres (2,722,020 sq mi).









It is the greatest river of About 2,500 fish species have been found within the Amazon system, but many more remain unidentified. The town of Manáos, now Manaus, at the mouth of the Rio Negro, had a population between 1,000 and 1,500. Articles from Britannica Encyclopedias for elementary and high school students. However, no definitive measure is available because no one is entirely sure where the Amazon ends and begins.

It is also found in the seasonally flooded savannas in the region.

This massive carnivore can grow up to 5 m in length and is the Amazon River’s largest predator.



This resulted in the development of "Operation Amazon", an economic development project that brought large-scale agriculture and ranching to Amazonia. At an average discharge of about 209,000 cubic metres per second (7,400,000 cu ft/s; 209,000,000 L/s; 55,000,000 USgal/s)—approximately 6,591 cubic kilometres per annum (1,581 cu mi/a), greater than the next seven The Amazon was initially known by Europeans as the The name Rio Amazonas was given after native warriors attacked a 16th-century expedition by Shell mounds were the earliest evidence of habitation; they represent piles of human refuseThere is ample evidence that the areas surrounding the Amazon River were home to complex and large-scale indigenous societies, mainly chiefdoms who developed towns and cities.Many indigenous tribes engaged in constant warfare.

Misimi of Peru.

This, although the government believed it could sustain millions, instead could sustain very few.With a population of 1.9 million people in 2014, Manaus is the largest city on the Amazon. The River Amazon in South America is the largest river by discharge of water in the world, and the second in length.. The Central and Northern Andes and the Amazon River basin and drainage network.False-colour satellite image of the confluence of the silt-laden Solimões River (bottom) with the clear Negro River (top). Articles from Britannica Encyclopedias for elementary and high school students.



(In July 2007 a group of scientists reportedly determined that the Amazon River might just be the longest river in the world, taking that title from the Nile River.



Four centuries after the European discovery of the Amazon river, the total cultivated area in its basin was probably less than 65 square kilometres (25 sq mi), excluding the limited and crudely cultivated areas among the mountains at its extreme headwaters.Wary of foreign exploitation of the nation's resources, Brazilian governments in the 1940s set out to develop the interior, away from the seaboard where foreigners owned large tracts of land. Every year, the river rises more than 9 metres (30 ft), flooding the surrounding forests, known as The quantity of water released by the Amazon to the Atlantic Ocean is enormous: up to 300,000 cubic metres per second (11,000,000 cu ft/s) in the rainy season, with an average of 209,000 cubic metres per second (7,400,000 cu ft/s) from 1973 to 1990.The Atlantic has sufficient wave and tidal energy to carry most of the Amazon's There is a natural water union between the Amazon and the Not all of the Amazon's tributaries flood at the same time of the year.

The estuary of the Amazon is about 330 km (205 mi) wide.

Among the more important commercial species are the The extensive lowland areas bordering the main river and its tributaries, called Since the later decades of the 20th century, the Amazon basin has attracted international attention because human activities have increasingly threatened the The first European to explore the Amazon, in 1541, was the Spanish soldier The original architect of this expansion was president In the 1960s, economic exploitation of the Amazon basin was seen as a way to fuel the "economic miracle" occurring at the time.


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