[Answer] Which countries share the longest border in the world?

Step 1 : Introduction to the question "Which countries share the longest border in the world?"

...The United States and Canada share the longest international border in the world, stretching over 5,500 miles from the Atlantic Ocean in the east to the Pacific Ocean in the west, including the boundary between Alaska and Canada's Yukon Territory. This extensive boundary is a powerful symbol of the peaceful and cooperative relationship between the two neighboring countries. The border is unique not only for its length but also for its largely unfortified nature, reflecting the mutual trust and deep ties that exist between the two nations.

Step 2 : Answer to the question "Which countries share the longest border in the world?"

Canada - USA:

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