The slogan “Fifty-four forty or fight!” was used to advocate which of the following United States foreign policies?
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Extending the United States northern border with British Canada to the Pacific Coast
Enforcing the return of enslaved people who escaped to northern states
Acquiring all of Texas, not just the area north of the Nueces River
Obtaining control of all the Oregon Territory from Great Britain
Preventing further attempts at European colonization in the Western Hemisphere
“Fifty-four forty or fight!” was a slogan used by American expansionists regarding the northern boundary of Oregon, which was under dispute by the United States and Great Britain in the 1800s. While Britain claimed territory as far south as the northern border of California at the 42nd parallel north, the United States claimed territory as far north as the 54°40ˈ parallel north at the southern border of Russian territory. When Britain rebuffed United States offers to settle the dispute with a border along the 49th parallel by insisting on its rights to the entire territory to the 42nd parallel, many American expansionists urged President James K. Polk to insist on the full United States claim to the 54°40ˈ parallel. In 1846, the Oregon Treaty established the border in its original position at the 49th parallel.