Balkans

Columns: City | Country | Population | Agglomeration | Year
Istanbul | Turkey | 9,000,000 | 10,000,000 | 2018 | Bucharest | Romania | 1,887,485 | 2,272,163 | 2018 | Sofia | Bulgaria | 1,313,595 | 1,995,950 | 2018 | Belgrade | Serbia | 1,119,696 | 1,659,440 | 2018 | Zagreb | Croatia | 792,875 | 1,113,111 | 2011 | Athens | Greece | 664,046 | 3,753,783 | 2018 | Skopje | North Macedonia | 444,800 | 506,926 | 2018

Example questions:
What Balkan city has the highest population from the country with a territory of 110,994 square kilometres ? | What is the population of the Balkan city awarded European Youth Capital of 2022 ? | What is the agglomeration of the Balkan city located on the highway D.100 ? | What is the population of the Balkan city along the Sava river ? | For the Balkan country where Moldoveanu Peak is located , which city has the highest population ?

Answers:
Sofia | 418,495 | 273,362 | 792,875 | Bucharest