UPSC CSE Prelims
Question 94
The longest border between any two countries in the world is between :
View correct answer and explanation
Correct answer: A
Correct Option: A (Canada and the United States of America)
Explanation: The Canada–United States boundary is the world’s longest international border, spanning the contiguous frontier and the Alaska–Canada boundary.
Option-wise Analysis:
A. Correct-Canada and the US share roughly 8,900 km of international boundary.
B. Incorrect-Chile–Argentina is very long but shorter than the Canada–US boundary.
C. Incorrect-India–China’s disputed boundary is significantly shorter.
D. Incorrect-Russia–Kazakhstan is a long continuous land border but shorter overall than Canada–US.