1. World Facts Lesson Seven, Grade Six

2. Largest country The largest country in the world (land area) is Russia. 17 million square km.

3. Largest country population The largest country in the world (population) is China. 1.3 billion people

4. Largest city population The largest city in the world (population) is Tokyo. 13.1 million people

5. Tallest building The tallest building in the world is the Burj Khalifa, in Dubai. 829 meters

6. Tallest mountain The tallest mountain in the world is Mt. Everest. 8,848 meters

7. Tallest person The tallest person in the world is Sultan Kosen. 2.51 meters

8. Most spoken language The most spoken language in the world is either Mandarin or English 1.02 billion speak Mandarin 1.5 billion speak English [estimate]

9. Most expensive car The most expensive car ever sold was a 1957 Ferrari 250 Testa Rosa, in 2011. 16.39 million dollars 16,390,000,000 won

10. Most popular sport The most popular sport in the world is soccer. 3.5 billion fans