I find the first quiz of the series the hardest by far. There I got 11/15, on the second I got them all with a bit of luck and here I just clicked through almost without thinking and again I got them all. I'm not complaining though, just sharing my observation.
I think the opposite. I breezed through the other two with little thought (and got 100% on both), but here I had to stop and think somewhat. It could be that I have all of the dates on the other two ingrained in my head, because that is how I learn best.
Because the Adriatic Sea is part of the Mediterranean Sea, but the Mediterranean Sea is not only made up of the Adriatic Sea (it also includes seas such as the Aegean, Marmara, Ionian, Tyrrhenian, Ligurian, Levantine, Libyan, Balearic, etc) as well as areas just defined as Mediterranean. Not super complicated.
Med doesn't border croatia
i got 12
the average is 12