Which is the largest country in the world? Well, look at the map and you'll know it is Russia. It is followed by Canada, China and America. Among them, China has the largest population, which reaches over 1.4 billion.
Canada has the longest coastline (海岸线). The total length (长度) of the coastline is about 202,080 kilometers. It's long enough to go around the earth six times.
Do you know which is the largest island in the world? Is that Hawaii? No, it is much smaller than the largest island in the world—Greenland. Greenland is to the northeast of Canada. Ice covers 81% of its land. It is very cold there, so there are only about 56,000 people living on the island.
Which is the longest river in the world? Of course it's the Nile. It is about 6,853 kilometers long. It runs through Africa from the south to the north. The Yangtze River in China is also famous around the world. It flows about 6,300 kilometers from western China into the East China Sea and runs across nine provinces. It's the third longest river in the world.
Vatican (梵蒂冈）is the smallest country in the world, with its area of 0.44 square kilometers, just as large as Tiananmen square. It has only a few people. Italy, a European country, is around it. So it's called "State of the country."
The world is a big place. It's so amazing!
