Why is the river Congo called the highway of central Africa?

The Congo River is often referred to as the "highway of Central Africa" due to its vital role in transportation and trade across the region. It serves as a major navigable waterway, connecting remote communities to urban centers and facilitating the movement of goods and people. The river's extensive network of tributaries also enhances accessibility in an otherwise challenging landscape, making it a crucial artery for economic activities and cultural exchange in Central Africa.