Color the Historical Flags #4

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

For each selected flag, name the country that has a population of at least 100 million people.

Try to name the countries of the world in 1910 based on their flags.

Click elements of the Periodic Table. But don't click anything that is not an element or the quiz will end instantly.