101 Interesting Facts About Canada ~ World's Longest Border

 The longest border in the world is the Canada-USA border . . . 

Canada – United States 8,893 Kilometers

The longest international land border in the world between two countries, Canada and the United States, is officially known as the International Boundary. The extensive boundary also includes the border that Canada shares with Alaska. A total of thirteen U.S. states and eight Canadian provinces and territories are located along the border. Throughout history, the border has undergone several changes with various treaties being signed. However, on April 11, 1908, the Treaty of 1908 was signed between the United Kingdom and the United States to survey and delimit the boundary between the two North American countries through the St. Lawrence River and Great Lakes.

This information came from this very interesting article . . . https://wowtravel.me/the-12-longest-land-borders-in-the-world/