The main reason why Ptolemy's Earth-centered system of epicycles taught throughout Europe for over a thousand years was because this fit well with the religious narrative of the day, since people could not fathom that the world was not in fact at the center of the universe, since this would imply than human being's were not the focus of God's creation.
1. Democracy
2. The Olympics
3. Science and Mathematics
African slaves contributed to agriculture and construction projects (they were forced to work on these).
Well the Industrial Revolution is known for taking hand-labor, and turning it into machines doing all of the work, so it would not be B. or C.
It did not really give them any more free time, for they had been upper-middle class and already had disposable income and free time.
So I do believe the best answer is A. Because they could use political power to enforce regulations; or I should say it made it easier.
Hope I helped, and good luck!
