What is the dependence of the direction of the current on the relief of the earth’s surface of the Amazon River?

In the northern part of this great river is the Guiana Plateau. It is because of him that part of the left tributaries flows precisely to the south. But in the southern part of this river is the Brazilian plateau. Because of them, part of the left tributaries flows precisely to the north.

The Amazon is the largest river on our planet. Its length is about seven thousand kilometers. Its basin area exceeds seven million square kilometers. The mouth of this river is located in the Atlantic Ocean.