The longest border between any two countries in the world is between :
A
Canada and the United States of America
Correct answer
B
Chile and Argentina
C
China and India
D
Kazakhstan and Russian Federation
Explanation
The Canada–United States border, about 8,890 km long including the Alaska–Canada section, is the longest international border in the world. The Kazakhstan–Russia border (about 7,600 km) and the Chile–Argentina border (about 5,300 km) are shorter, and the China–India boundary is about 3,488 km.
World & Regional Geography