lots of things like fishing and drinking water
No
no there are NO man-made features in the amazon river its all NATURAL!
The Amazon river/rain forest is a natural feature, not a man made feature.
the Amazon
The Amazon river does not have a gorge, but it does have natural canals and hills. It has multiple channels as well.
YES! The slime in the amazon river is one of the most poisonous things known to man!
The Colorado river is not man made, but a reservoir on the river named Lake Powell is.
No because a man can not make a river
the River Thames, is natural, it is not man-made.
Magical pixie dust.
the river thames, is natural, it is not man-made.
The great wall of china is one man made landmark that can be seen from space, the amazon river is a natural landmark that can be seen.