Which country shares the longest land border with China?
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.
China has the longest land border with Mongolia - 4,677km (2,906mi).
With a land border of 22,117 kilometers (13,743 mi) in total, China also has the longest land border of any country.
More Info:
en.wikipedia.org
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