It is 1847, and President Polk was elected in 1944 on an expansionist, anti-British ticket. IOTL, President Polk switched his expansionist aims from the Oregon Dispute to Mexico because of Mexican aggression along the Rio Grande. In this timeline, Polk continues to push against the British in Oregon. By summer of 1847, American forces are massing along the Canadian border, preparing for invasion. The American navy puts to sea in August, and Polk issues an ultimatum to England: Cede the entirety of the Oregon Territories to the United States, from the current border, to the arctic circle, or face war. English public sympathies - in this timeline - lay with just giving the Americans what they want, but the government is as hard headed as all governments are. The English refuse, and begin moving forces toward the American East Coast and Canada. In negotiations, key southern Senators are promised if they support Polk in the conquest of the Oregon territories, and whatever other lands that can be taken during a conflict with England, then northern Senators will support expansion into and conquest of Mexico and Cuba, all to balance the continued Free/Slave State issues, but the Southern expansion will wait until later. In the fall of 1847, tensions between America and England are near boiling, and in spring of 1848, the coiled spring explodes. Civilian "colonists" flooding into the Oregon Territory clash with English military units, and the war is on. In what will end up being called the "Third American Revolution", America does finally win, but it is the bloodiest conflict yet fought by America, and it permanently severs American/British relations. So, let's run this scenario out, from the war beginning to modern times, if we want. What do you guys think?