March 21st: Birthdays

There are 45 countries that are generally considered to be part of Europe. How many can you name?

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

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

We give you the name of a Simpsons character, you click them on the picture.