Please add Cuba.
"This quiz is too US-centric!" ==> This quiz contains questions about the United States which I don't know the answers to, because I know mostly about Europe and would prefer that the US did not exist.
"How about some questions about the rest of the world?" ==> How about some more questions about Europe, specifically whichever country I live in and those nearby, as, like all human beings on Earth, I am concerned primarily with local geography. I don't really know much about Nepal or Botswana or Uruguay, either. "The world" can be understood to mean Europe, or Western Europe more specifically.
I'm starting to pick up on the local lingo after spending the last two years traveling around here. People here are upset that Americans don't know about "geography." By which they mean their country. Because they certainly don't know about any others. I've quizzed them and they always fail.
Anyway. back to our regularly scheduled program
Historically, there were much more important territorial accessions than United States stealing American continent. I'm surprised not to see someones taking over of Jerusalem in this quiz....
You probably believe that those "nations" or "ethnicities" have existed for much longer and that they eventually "awakened" and fought for their independence/unification, but that's a false narrative. Nationalism is a very recent phenomenon in history, and "nations" in the modern sense of the term didn't exist until approximately the 19th century. The modern country of Greece has nothing to do with Ancient Greece, which never even was a unified country in its time.