Wikipedia: "Aleppo was the largest Syrian city before the Syrian Civil War; however, now Aleppo is probably the second-largest city in Syria after the capital Damascus."
It would be interesting to see how the average-person-on-the-street would do on this quiz, particularly those with the whole "we should just bomb the whole Middle-East and be done with them" mentality.
If by "interesting" you mean that it would prove you are smarter, then I'm sure you're right. It's worth interrogating your motivations though. If you actually want something about that situation to change, this is not the way to persuade anyone.
I'm relatively young, and I too was taught and know that region as the Fertile Crescent. Kept trying typing it and couldn't figure out what I was doing wrong.
The Fertile Crescent includes considerably more than the land between the rivers, and wasn't really its historical name--it came into use in 1914. Whereas Mesopotamia actually means "between the rivers" and is definitely historical.
It seems that the Grand Ethiopian Renaissance Dam is actually now the largest dam on the Nile (It's on the Blue Nile in Ethiopia, that feeds 80% of the Nile's water). Got stuck on that question.
If I make another one of those I'm going to have to remember Zagros mountains. Z answers are a little hard to come by.