Countries Polo G has Visited

Name all 50 states in the USA. Easy, right?

Based on the clues, can you guess these cities which start with each letter of the alphabet?

Fill in the map by guessing languages. When you guess a language, all the countries that use it as an official language will be filled in.

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