The answer is A) it gained better building materials from the steel industry, because in the second industrial revolution, the invention of steel provided a strong, easy-to-produce material. Railroads were rapidly expanding, and were using up lots of resources to be built. Steel production started to help the railroad system, since it became one of the major materials used for construction of railroad tracks.
Worshiping more than one god. There is only one god in the religions. You could marry someone of another faith, and it "is allowed" to convince someone to change religions. Also, you can, of course, trade food for tools.
The answer is B, as a necessary evil
