The trans Atlantic trade.<span />
Most ancient religions were polytheistic (they believed in many gods). But the worship of one god (Monotheism) made Judaism unique.
Your answer would be C. The worship of a single god rather than many gods.
I hope this helps!
Brown v. Board of Education
https://en.wikipedia.org/wiki/Brown_v._Board_of_Education
<span>The correct answer here is C. From studying early cave painting, scientists are able to conclude that early humans expressed themselves creatively. This is obviously just not from one set of cave paintings, but from the great variety of different artistic styles that can be seen the world over in this ancient art.</span>