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Foreign Policy

Anglo‑American Convention of 1818 signed

The United States and Great Britain signed the Anglo‑American Convention (Convention of 1818), establishing the 49th parallel from the Lake of the Woods to the Rocky Mountains and agreeing to joint occupation of the Oregon Country for ten years, along with fishing and navigation arrangements.

The convention resolved a major U.S.–British boundary dispute, eased post‑War of 1812 tensions, and set a framework that shaped the future U.S.–Canada border and westward expansion.

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