The pyramid is man made, the Nile is a river and a natural phenomenon.
1. Colorado 2. Utah 3. New Mexico 4.Wyoming EDIT: Actually there are only three since the New Mexico/Texas border near El Paso is not straight.
The river is frozen
it was built by man
A man made waterway is a canal.
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.
the river thames, is natural, it is not man-made.
yes it is man made
No, the St. Lawrence River is not man made. But the St. Lawrence Seaway that follows part of the river's path is.
No, it is a naturally formed river.
it not man made it is a natural landmark
No.
No
no.
it was a man made river retards