The United States acquired part of Oregon territory by: * Paying Great Britain Going to War with England Compromising with England Winning the Mexican American War

The correct answer is "Going to War with England."

The United States acquired part of Oregon territory by going to War with England.

In another episode of the many confrontations between Great Britain and the United States, both countries went to war to decide the issue of the Oregon Territory. United States President James Polk was determined to fulfill Manifest Destiny and wanted those territories for the United States.

After the Pig War, both countries signed The Oregon Treaty on June 15, 1846, in Washington D.C. These countries divide the territory in parallel  49. To the north, it was for Great Britain. To the South, for the United States.

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