The longest border between any two countries in the world is between:
- Canada and the United States of America
- Chile and Argentina
- China and India
- Kazakhstan and Russian Federation
Explanation
Option (a) is correct
- The International Boundary between Canada and the USA is the longest international border in the world, with around 8,891 kilometres from the Pacific Ocean in the west to the Atlantic Ocean in the east.
- The Russia-Kazakhstan Border holds the distinction of being the longest continuous international border globally and ranks as the second longest in total length, following the Canada-United States border.
|
Ten Longest Borders in the World |
|
| Canada-US border | 8,891 km |
| Russia-Kazakhstan border | 7,644 km |
| Argentina-Chile border | 6,691 km |
| China-Mongolia border | 4,630 km |
| Russia-China border | 4,300 km |
| India-Bangladesh border | 4,096 km |
| Mongolia-Russia border | 3,485 km |
| Bolivia-Brazil border | 3,423 km |
| India-Pakistan border | 3,323 km |
| Mexico-United States border | 3144.66 km |
