Your answer would be A) by highlighting German atrocities inflicted on the Allies. Hope this helps!!!
A. Developing nations are characterized by low income, high birth rates, high infant mortality, and economies still within an agrarian or early industrial mode of production.
It was the Louisiana purchase.
Generally speaking, after the fall of the Soviet Union "<span>a. ethnic conflicts and separatist movements threatened stability," since there was an immediate collapse in the major power structure that had "tied" the nation together. </span>
The answer is D. <span> invention of the first steel tools
Actually, this very topic is still a hot debate among scientists because the shift happens on different reasons in each region of the world.
But one thing they have in common is that Steel tools give the member of early societies the capabilities to rake uplands and cutting up crops that really useful in farming and herding.</span>