Iceland was not independent from Denmark until 1944. Also, Czechoslovakia was under German occupation and Albania was under Italian occupation before the war started. If you want to consider this a pre-1938 quiz then it would be okay for them to be there but Austria would need to included as its own country as well.
I will quote Wikipedia: On 1 December 1918, the Act of Union, an agreement with Denmark, recognized Iceland as a fully sovereign state in personal union with Denmark through a common monarch. And Albania was occupied by Italy in april 7th 1939.
I only missed Danzig - I tried typing in 'Gdansk' as that fit the alphabetical order, too! should it be allowed as a type-in? I was expecting to see Malta, didn't realize its independence is so recent!
This quiz is simply wrong. Just before WW2 Albania had been taken over by Italy; Czechoslovakia did not exist, Slovakia was a German puppet state; Iceland was in union with Denmark much as Scotland and England were as part of one country....