How a pig nearly started a war between Britain and America in 1859

In 1859, a single pig turned a quiet island dispute into a tense confrontation between two powerful nations. What began as a farmer’s frustration over a wandering animal on San Juan Island quickly escalated into a military standoff involving British warships, American soldiers and competing territorial claims. The disagreement was rooted in a much older problem; an unclear boundary created by the 1846 Oregon Treaty. As tensions mounted, both sides reinforced their positions, raising fears that a seemingly trivial incident could spark an international conflict. For 12 years, Britain and the United States maintained rival camps on the island but avoided open conflict.