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Guess the world's twenty most-traded currencies, and the countries or special regions that issue them.

Name all of the publicly-traded U.S. companies that have ever reached a market valuation of $1,000,000,000,000.

What are the most common countries of birth for Dutch residents who were not born in Netherlands?

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