Explanation
The border between Canada and the United States is the longest international border in the world, stretching approximately 8,891 kilometers (5,525 miles), including the border shared with Alaska. It is a peaceful boundary and includes both land and water segments.
Chile and Argentina:
* Length: Approx. 5,308 kilometres
* This is the third-longest international border in the world and the longest in South America.
* It follows the Andes mountain range for most of its length, with several high-altitude border crossings.
China and India:
* Length: Approx. 3,488 kilometers * It is highly disputed in areas such as Aksai Chin and Arunachal Pradesh, leading to occasional tensions between the two nations.
Kazakhstan and Russian Federation:
* Length: Approx. 7,644 kilometers
* This is the second-longest international border in the world.
* It is largely flat, passing through vast steppes, and is a vital region for trade and natural resources between the two countries.