I can, but I don't want to. Because the singular of one of the answers is the first part of another (similar to the UK at the beginning of Ukraine in the country quizzes). Sorry for the inconvenience!
I think you should be accepting 'Gagauz'. I saw your comment above that you won't be accepting singular form of ethnicities, but 'Gagauz' in itself is both singular and plural and 'Gagauzes' is the minority term.