Geography
Which Two Countries Share the World's Longest Border?
Between which two countries does the world's longest international border stretch, measuring approximately 8,891 km?
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What is the answer to the world's longest international border riddle?
Canada and the United States. Their shared border runs about 8,891 km (5,525 miles), making it the longest international boundary on Earth.
How long is the Canada-United States border?
It stretches roughly 8,891 km, including the Alaska section, from the Atlantic to the Pacific.
Why is the Canada-US border famous?
It is the world's longest international border and one of the most peaceful, with no permanent military presence along it.