It's also unclear to me that a partially-recognized government-in-exile formed years after their country's surrender whose army exists solely as a branch of a foreign nation's armed forces should really be considered a "country" that declared war.
At the very least, you do need to update the quiz to fix the mistake.
In 1941, the Republic of Korea had a provisional government and they declared war on Germany and Japan forming the "Korean Liberation Army".
It's also unclear to me that a partially-recognized government-in-exile formed years after their country's surrender whose army exists solely as a branch of a foreign nation's armed forces should really be considered a "country" that declared war.
At the very least, you do need to update the quiz to fix the mistake.
Depending on how you look at it, Iran became known as Iran in the West anywhere between 1907 and 1979.
*To Iranians*, it has been known as Iran or similar names for around 3000 years now.