Canada Shares the World's Longest Undefended Border

The 8,891-kilometer border with the United States is the longest international land border not fortified by military defenses. This symbolizes a long-standing peaceful relationship between the two nations, unique globally.

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https://www.international.gc.ca/world-monde/international_relations-relations_internationales/united_states-etats_unis/canada_us_relations-relations_canada_eu.aspx?lang=eng

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Published: March 30, 2026
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Canada History Politics Geography Border Usa International Relations Peace

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