航空运输旅客周转量最大的国家 Countries by air passenger traffic turnover

Can you name the capitals cities of all 196 countries in the world?

Try to name the countries that have the greatest number of active military troops.

20 random countries have been removed from the map of the world! Can you identify them in 3 minutes?

On each row, there is one song that was released in the 2010s and two songs that weren't. Guess the song from the 2010s.