Which of the following inventions destroyed the first market for petroleum?
a. the light bulb
b. the automobile
c. plastics
d. frozen foods

The light bulb (A) destroyed the first market for petroleum.

Before the invention of light bulbs, petroleum rather than electricity was used to light homes, streets, and everything in between. After the light bulb became common place, the need for gas lighting diminished, therefore effectively destroying the first market for petroleum.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.