The ancient geographic setting of a region is known as its

a. passive margin.
b. paleogeography.
c. phytoplankton.
d. transgression.

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.