The longest border between any two countries in the world is between :
ACanada and the United States of America
BChile and Argentina
CChina and India
DKazakhstan and Russian Federation
Answer & Solution
Correct answer: A. Canada and the United States of America
Answer: A. The longest border between any two countries is between CANADA and the USA.
The Canada-United States border is approximately 8,891 km long (including the Alaska-Canada border of about 2,475 km). It is the longest international land border in the world.
Distractors:
(B) Chile-Argentina border is about 5,300 km long (the second longest in the Americas) but shorter than Canada-USA.
(C) China-India border (LAC) is about 3,488 km long.
(D) Kazakhstan-Russia border is about 7,644 km, the second longest international border in the world but still less than Canada-USA.
Source: NCERT Class 11 Fundamentals of Physical Geography / CIA World Factbook border statistics.
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