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what large river in brazil has its mouth at the atlantic ocean ?

**Exploring Brazil’s Mighty Rivers: Amazon, Tocantins, and Paraná**

Brazil is home to some of the world’s most impressive rivers, each playing a crucial role in the country’s geography and ecosystems. Let’s delve into three of these mighty rivers that flow into the Atlantic Ocean, highlighting their significance and unique characteristics.

### The Amazon River: The Largest in the World

The Amazon River is undoubtedly the most iconic river in Brazil. As the largest river by discharge volume, it flows through the heart of the Amazon rainforest, a region renowned for its biodiversity. The Amazon River begins its journey in the Andes Mountains and meanders through Brazil, eventually emptying into the Atlantic Ocean. Its basin is the largest in the world, covering over 7 million square kilometers and home to an unparalleled variety of flora and fauna.

### The Tocantins River: A Significant Tributary System

While the Tocantins River is a tributary of the Amazon, it holds its own as a major river in Brazil. Flowing from the south to the north, the Tocantins is part of the Tocantins-Araguaia river system, which drains into the Atlantic. This system is vital for its role in the region’s hydrology and as a habitat for diverse aquatic species, including the Amazonian manatee and river dolphins. The confluence of the Tocantins and Araguaia rivers near São João marks a significant point in Brazil’s river network.

### The Paraná River: Flowing into the Atlantic via the Río de la Plata

The Paraná River is another major player in Brazil’s river system. It originates in the highlands of Brazil and flows southward, eventually joining the Uruguay River to form the Río de la Plata estuary, which empties into the Atlantic Ocean. The Paraná is the second-longest river in South America and plays a crucial role in regional transportation and agriculture. Its basin supports rich ecosystems and is a vital resource for the countries it traverses.

### Conclusion

Brazil boasts an impressive network of rivers that significantly impact its landscape and economy. The Amazon River, the Tocantins-Araguaia system, and the Paraná River each contribute uniquely to the Atlantic Ocean, showcasing Brazil’s rich hydrological diversity. These rivers not only define the country’s geography but also sustain its biodiversity and economic activities.