The United States and Canada share the longest unguarded international border in the world.
Chile and Brazil would have to be the longest.
The two countries with the second longest border in the world are the United States and Canada. Their border stretches approximately 8,891 kilometers (5,525 miles), making it the longest international land border between two countries. This extensive boundary includes both land and water borders, reflecting the vast and diverse geography of North America.
Argentina and Chile
The Danube.
Canada (1st) and USA (2nd).
National borders of WHAT country.
There are 5 countries which share borders with Pakistan. India on the eastern side has the longest border with Pakistan. China is in the north. In the west Pakistan share border with Afghanistan and Iran.
Russia has the longest border in the world, measuring over 60,000 kilometers. The country shares its borders with 14 other countries, spanning across Europe and Asia.
New South Wales has the longest
The countries with the longest land border are Canada and the United States. They share a border that is approximately 8,891 kilometers (5,525 miles) long.
The longest mountain ridge in the world is the Andes. The Andes is in South America and spans 7 countries for 4,700 miles.