Oregon boundary dispute
Polk presidency

After Polk's inauguration, British diplomats began to receive instructions influenced from HBC officials like Simpson, whose suggestions were transmitted through Pelly and then Aberdeen to the British Ambassador Richard Pakenham. In a letter written to Calhoun in August 1844, Pakenham pressed for a border along the Columbia River. He made an offer that likely originated from Simpson: Americans could select naval bases on the portion of Vancouver Island south of the 49th parallel or along the Strait of Juan de Fuca in return. Diplomatic channels continued negotiations throughout 1844; by early 1845 Everett reported the willingness of Aberdeen to accept the 49th parallel, provided the southern portion of Vancouver Island would become British territory.
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