Answer:
Scarcity as an economic concept "... refers to the basic fact of life that there exists only a finite amount of human and nonhuman resources which the best technical knowledge is capable of using to produce only limited maximum amounts of each economic good ... ."[1] If the conditions of scarcity didn't exist and an "infinite amount of every good could be produced or human wants fully satisfied ... there would be no economic goods, i.e. goods that are relatively scarce...
It helped by evolving into currencies and the present day marketing.
It depends what century your are talking about. If we are talking about the cotton gin that was made by Eli Whitney, the cotton gin made it easier to make cloths. And the Lowell girl were the first good job were they were allowed women to do things.
I think it might be Malone but I'm not exactly sure
The amendment granted citizenship to "all person born or naturalized in the united states" which included former slaves who had just been freed after the civil war.
So the answer is A