In what country is Baku the capital?

Explanation

Azerbaijan is a repulic in south Caucasus, bordering on the Caspian Sea. The country is a secular state and has been a member of the Council of Europe since 2001. The majority of the population is Shia muslim and of western Turkish decent, known as Azerbaijanis. The capital is Baku and the country has some 9 million inhabitants and covers an area of 86,632 km².