If you are asking about the US, then it is the Mississippi river and its tributaries.
The Congo River.
The largest river that runs through the Congo Basin is the Congo River.
The Orinoco River arises in the Cordillera De Mérida and flows for 510 miles (820 km) northeast and east through the heart of the Llanos (plains), Venezuela's most important cattle-raising area. The Orinocco with its rich aluvial soils is the biggest water system in Venezuela followed by the Apure and Caroni rivers.
The large river that runs through the basin is the Congo river. The Congo river is also the worlds deepest river.
Tributaries; They contribute to the river system.
The Orinoco River is 2,140 km long and passes through two countries. More three quarters of the river passes through Venezuela with the remainder passing through Colombia.
Tributaries.
The River Thames has 51 different tributaries that run into an infinite number of lakes and seas in Europe. It is perhaps the most famous river in Europe.
Tewkesbury stands at the confluence (meeting) of the River Severn and the River Avon. Also two minor tributaries the Swilgate and Carrant Brook meet there as well.
it is located in south america
The large river that runs through the Congo Basin is the Congo River. This river, one of the longest in the world, is supported by numerous tributaries, including the Ubangi, Kasai, and Lualaba rivers. Together, they create a vast network that plays a crucial role in the region's ecology and the livelihoods of its inhabitants. The Congo River is vital for transportation, trade, and sustaining the rich biodiversity of the rainforest.