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.
No because a man can not make a river
The Colorado river is not man made, but a reservoir on the river named Lake Powell is.
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.
it not man made it is a natural landmark
No, it is a naturally formed river.
No.
No
no.
it was a man made river retards