Which country has the longest land border?
China shares international borders with 14 sovereign states. In addition, there is a 30-kilometre (19 mi) border with the special administrative region of Hong Kong, which was a British dependency before 1997, and a 3-kilometre (1.9 mi) border with Macau, a Portuguese territory until 1999. With a land border of 22,117 kilometres (13,743 mi) in total it also has the longest land border of any country.
China, officially the People's Republic of China (PRC), is a country in East Asia and the world's most populous country, with a population of around 1.404 billion.
China's landscape is vast and diverse, ranging from the Gobi and Taklamakan Deserts in the arid north to subtropical forests in the wetter south. The Himalaya, Karakoram, Pamir and Tian Shan mountain ranges separate China from much of South and Central Asia. The Yangtze and Yellow Rivers, the third- and sixth-longest in the world, respectively, run from the Tibetan Plateau to the densely populated eastern seaboard. China's coastline along the Pacific Ocean is 14,500 kilometers (9,000 mi) long and is bounded by the Bohai, Yellow, East China and South China seas.