A lot of these aren't renamed so much as annexation. Like Tibet, it got annexed by China. Newfundland joined Canada. Yugoslavia just broke up into a bunch of countries. Czechoslovakia I can let slide
Modern-day Iraq was the most of Mesopotamia was. But other than that I think it's a good quiz. You could add Korea, French Indochina, Tannu Tuva, Hatay, Burma, East Timor and maybe Western Sahara. You could also add the year of the annexation or renaming.
Good Quiz, but Yugoslavia should accept Croatia and Serbia, as well as Bosnia and Herzegovina, Kosovo, Macedonia, Montenegro, and Slovenia. Newfoundland, first, it is Newfoundland, not NewFoundLand, and second, it was not annexed, it joined Canada willingly.