In 1846, <span> the </span>Oregon<span> boundary dispute between </span>the U.S and Britain settled with signing the Oregon treaty <span>The British gained sole possession of the land north of the 49th parallel and all of Vancouver Island, with the </span>United States receiving the territory south of that line.
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The Civil War had a greater impact on American society and the polity than any other event in the country's history. It was also the most traumatic experience endured by any generation of Americans. At least more than 600,000 soldiers lost their lives in the war, at least 2% of the American population in 1861.
The primary way in which these nations built empires was through pure destruction. They would come into these small island nations and simply wipe out populations and take control of the government.