The drainage in which has the capability of separating drainage
basins in which are emptied in the bodies of water that surrounds a continent
is known to be the continental divides. The continental divides separates the
rivers in north America in which are flowing in the Pacific Ocean and as well
as the Atlantic Ocean.
Explanation:
the answer is b because the human being was in the nomadic way of life and settled which is changed to Neolithic life because of civilization