1) Which country is the most populous?
2) What is the highest mountain on Earth?
3) What is the largest ocean in the world?
4) What is the longest river in the world?
5) What is the most spoken language in the world?
6) What is the largest country by area?
7) What is the capital of Canada?
8) In what year did South Africa become a democratic republic?
9) Who is the current president of the United States?
10) What is the official language of Brazil?