English: Canada is a country in the north of North America. It borders the Atlantic Ocean in the west, the Pacific Ocean in the east, the Arctic Ocean in the north and the North Pole. Greenland in the northeast and the territory in the west of Canada are bordered by Denmark, facing St. Pierre and Famiglian Islands in the east, and bordering the United States in the south and west. The northwest border is 8892 kilometers long, which is the longest undefended border in the world. Canada consists of ten provinces and three regions, with Ottawa as its capital. It is also one of the countries with the largest number of cities in China among the annual winners of the world's best living cities. As far as land area is concerned, Canada is the second largest country in the world (including land area, only next to Russia, China and the United States), but its population density is very low, lasting only 32 million residents. Canada is a developed country with modern industrial and technological level, with abundant energy resources, and its economic system depends on natural resources.