Aqueduct is that canal. I'd choose none of the above as the aqueducts was firstly built in ancient Rome. But there's no such option. So the closest option is the first one A.Greeks
Answer:
The Civil War had a greater impact on American society and the polity than any other event in the country's history. It was also the most traumatic experience endured by any generation of Americans. At least more than 600,000 soldiers lost their lives in the war, at least 2% of the American population in 1861.
Galileo's problem was that he was trying to teach people science which was in conflict with what the church preached. When he started questioning the church and providing scientific results the people started questioning as well which did not bode well for the church. The conflict got resolved with him abandoning his research and living a quite secluded life until he died.
Peisistratus was the first Athenian tyrant if that is what you are looking for
