Aristotle was a leading thinker in which civilization?

Aristotle (c. 384 B.C. to 322 B.C.) was an Ancient Greek philosopher and scientist who is still considered one of the greatest thinkers in politics, psychology and ethics. When Aristotle turned 17, he enrolled in Plato's Academy. In 338, he began tutoring Alexander the Great. hope that helps!

the american civil war was not caused   by slavery but by economic factors.