Hola Neodymium! I tried your Spanish version (to practise my Spanish) and questions 3, 6, 7, 10, 12, 14, 15 were marked as wrong despite being correct in the English version. Just letting you know...
Great quiz. Question 11 might benefit from a slight rewording. "Spoken Cantonese (Yue) cannot be understood by people who speak Mandarin." I thought that this might be a trick question because when written out, both dialects should be understood by both people. I still should have gotten that right though. :)
The Shang dynasty and Zhou dynasty are firmly supported by archaeological evidence... You must be thinking of the Xia dynasty, which is an uncertain time period that predates those dynasties.
Based on the results, I guess people forget that Suez canal wasn't built until 19th century, and Zheng He probably wasn't keen on sailing around Africa....
Spanish Version!
You can do it again if you like!
https://en.wikipedia.org/wiki/Zheng_He