US state capitals by letter-B

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

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

Click on every square of the world map which contains an urban agglomeration with a population of at least 10 million.

Locate these 25 countries by clicking on a blank map of the world.