This one is a toughie.
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The world is a mind-boggling place. There is a lot to know about our planet and how humans interact with it. Were you aware that Mount Everest can fit inside the Mariana Trench? Challenger Deep in the Mariana Trench is 36,201 feet (11,034 meters) deep. By comparison, Mount Everest is 29,032 feet (8,849 meters) tall? Also, did you know that underwater lakes and rivers exist? These formations, often called brine pools, can have their own shores and even their own currents and waves? How about the fact that Brazil is so large that only two countries in South America do not border it? You'll get plenty of chances to test your knowledge of world capital cities with this geography quiz.
This capital cities quiz is not as easy as it sounds! In fact, you can be sure that it will push your brain to the limit. You will be tested on your memory of not only famous cities, but also the more obscure ones as well. Take this quiz to test your geography knowledge, and maybe learn a few things along the way. Are you ready to take your brain over the hurdles?