Hah hah, needs a lot of polishing! Thanks! Yes, I was on the phone while making this quiz, and you can really see that the concentration wasn't even near there ;D
Y can be both a consonant and a vowel in english. It is not a consonant in Norway or city etc. but definitely in Yemen, Yonkers etc. https://simple.m.wikipedia.org/wiki/Consonant
How come vatican city is included as it should finish with a "Y".
Vietnam should not have the "yemrn" on the end
How come USA, UAE, UK and Uzbekistan and Oman are included as they all start with a vowel.