京沪高铁设站的所有地级与县级行政区

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

With the help of a map, can you name the countries which existed during the Revolution of 1848?

Click on the first names of first ladies of the United States. But three wrong guesses ends the quiz.

Drag the flag onto the correct state. Careful, though! One wrong move and the game ends.