The Industrial Revolution.
Answer:
Harpers Ferry Raid, (October 16–18, 1859), assault by an armed band of abolitionists led by John Brown on the federal armory located at Harpers Ferry, Virginia (now in West Virginia). It was the main precipitating incident to the American Civil War.
Explanation:
Revenue and profit are pretty similar in meaning, but I would say that it is (a) Profit. Let me know if this helps! :)
It was a combination of oligarchy(Gerousia) , monarchy(kings) and democracy ( ephoroi, ephors)
