In which country is the Kızılırmak River located?
Correct answer: Turkey

Castra
I have to admit that I've not heard of that river, but the spelling gave me the answer.

I, Claudius
It's Turkey'slargest river at 355 km (852 miles) long, and it runs through the central northern area of the country. Historically it served as a natural boundary between different kingdoms and empires in ancient Anatolia, including between Lydia and Media, and later between the Pontic Kingdom and Cappadocia.

Player #134202314
little b, A beautiful country, with lovely people, but I never knew about this river.

little b
I've not been to Turkey😥😈