The most abundant fossil fuel is coal... Coal isn't only our most abundant fossil fuel,it's also the one with perhaps the longest history. The U.S. has more coal reserves than any other country in the world. In fact, one-fourth of the all the known coal in the world is in the U.S.
8 pounds hope this helps!!!
-struggling economy.
Developed countries tend to extort developing countries and get richer while the developing countries get poorer , hence a struggling economy.
