Diplomacy: Britain vs America #5 (Patreon)

The journey to the Webster-Ashburton Treaty was long and painful, but the Earl of Aberdeen would have to persevere if the improvement in Anglo-American relations - and the boost in trade - was to be grasped. The Americans protested over Right of Search, a bugbear to US national honour, and a hint for how problematic the slavery question was to become. France was also eager to assert its own perspective, and made it plain that if war did erupt, French forces would stand once more on the American side. Faced with these warnings, British diplomacy balanced precariously on the edge, and though a kind of success was found in the end, the future was far less certain...

See the image below which depicts the dispute on the Maine border with Canada, which formed the bulk of Anglo-American negotiations, despite the odds.