Federal government has the highest authority
I think it was free blacks, but I am not 100% sure
I think It's the rise of American labor unions
The main cause of the second industrial revolution was, natural resources, abundant labor supply, strong government policy and new sources of power.
OK so judging from the options given the best answer will be option B. because by suffering and going on with life you are living for him and that brings you one step closer to heaven because you are following his plan.
