This quiz is on the capitals, and official languages of the 193 UN Nations, Abkhazia, Cook Islands, Kosovo, Niue, Northern Cyprus, Sahrawi Republic, Somaliland, South Ossetia, Taiwan, and Transnistria organized by the 21 UN subregions.
It is important to note not every nation has an official language at the federal level (ex: USA), for that nation without an official language the de facto language is assigned on this quiz as the official. In addition to the previous disclaimer it's important to note that executive leader refers to the leader of a nation that has the most influential de facto power regardless if he/she is head of government or head of state