Russo American Treaty - This treaty set the boundaries between the Russian and American claims. This treaty was signed in April 1824 in St.Petersburg but was not put into effect until January This gave Russia the claim to waht we know as Oregon Country
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North America 171 years ago today: Oregon Treaty (15 Jun 1846) http://omniatlas.com/maps/northamerica/18460615/ War with Mexico encouraged President Polk to settle the Oregon dispute between the US and Britain. In June both countries agreed to the division of Oregon Country along the 49th parallel, with Vancouver Island falling to Britain.