? Looks like u answered ur self .-.
Answer:
Ghana is a country in the Western region of Africa. Its geography is divided into four major zones.
The coastline which is sandy with plains and scrub with rivers and streams.
The high plains are found in the northern part of Ghana.
Ashanti uplands and plateau which are found in the South-west and south-central part of Ghana
The hilly Akwapim-Togo ranges are found along Ghana's eastern international border.
These features makes the country distinct.
yo its the Vatican City in Europe
It is impossible to build a drainage system on the outside of the Sao Francisco river as buildings are built on the outside of the foundation.
The Subarnarekha is developing a small drainage system.
The Amazon basin is the largest drainage basin in the world.
The Urugay drainage system includes the greater part of southeastern Brazil, Paraguay, southeastern Bolivia and northern Argentina
So i would suggest putting the Amazon as it is the most common known and largest. Remember to use geographical terms!