Folk is practiced by a smaller group of ppl, popular culture is practiced with bigger social groups(Mostly with more developed countries) Hope this hopes!!!
The temple of Artemis is the most brilliant of the wonders that Antipater has seen. This is the main idea because the passage talks about all the amazing stuff the main character has seen, but the temple is more beautiful than all those things.
The American Industrial Revolution was a time of great political, economic, and social change.