Japanese prefectures flags

We give you the capital city, you give us the country. Twenty randomly-generated questions that change every time you play.

In 90 seconds, make every country disappear from the map by typing both its first 2 letters and its last 2 letters.

Name the countries from which the greatest number of refugees have fled.

Drag the flag onto the correct country. Careful, though! One wrong move and the game ends.