The Indian Ocean
The Zambezi empties into the Indian ocean
Zambezi and the Nile run through Africa, probably more but these are the ones I know.
Pacific Ocean
Zambia, Congo, Angola, Namibia, Botswana, Tanzania, Mozambique, Malawi, Zimbabwe
Hudson River
The Zambezi River is the fourth longest in Africa. It flows through Angola, Namibia, Botswana, Zimbabwe, and Mozambique and the Congo.
The two main rivers that run through the Kalahari Desert are the Okavango River and the Zambezi River. The Okavango River flows into the Okavango Delta, creating a unique inland delta ecosystem. The Zambezi River, while primarily associated with neighboring regions, also influences the Kalahari's landscape, especially in areas near its northern boundary. Both rivers are vital for sustaining the diverse wildlife and plant life in the Kalahari.
it is either the missisippi or the missouri
A watershed is not a building, it is an area of land that contributes run off to a given lake, stream, river or other body of water. It's purpose is to supply water to the water body. (From Ask.com)
All streams including rivers run downhill, so melting snow, rain, etc. produce water and this water drains into rivers and the rivers run downhill until they empty into a larger river or a major body of water like a gulf or ocean.
Botswana, Zimbabwe, Mozambique, Malawi, and Tanzania.