Countries at 0° Longitude (Prime Meridian)

How many countries do you know? In this quiz, you've got 15:00 to name as many as you can. Go!

Name the 20 cities ranked as the world's top financial centers according to the Global Financial Centres Index.

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

For each selected category and continent, name ANY country which fits the criteria.