To properly investigate what caused this war, you need to look real hard at all the events leading up to this date. The American System was giving the British Imperialist Empire real headaches all over the world. At the time, every country under their rule wanted like crazy to be free of England's tyranny and become a sovereign nation. The roaring success of Alexander Hamilton's Public Credits System turned National Debt into National Currency and poured it into nation - building infrastructure, returning loads of money real fast into America's First National Bank. The imperialists were rip-roaring mad! The Empire Loyalists schemed day and night to crush America from both within and without. One of their best agents was Aaron Burr. He established the Private Bank of Manhattan in 1799 on Wall Street, which was already a hub of British-backed private financiers and slave and opium traders, as a direct attack on Mr Hamilton's National Banking Policies. Anyway, you can read all about it in Anton Chaitkin's Treason in America: From Aaron Burr to Averell Harriman, Second Edition 1985. So, moving on to 1804. This expert marksman, Mr Burr, assassinated Mr Hamilton in a provoked dual. Straight after, he wrote to the British Ambassador to Washington to offer his services to split up the United States by organizing sectional rebellions, for which he was tried for treason in 1807. He fled to England, where he stayed in the home of Jeremy Bentham, Lord Shelburne’s chief intellectual hired gun and the British East India Company’s ideologist. Now, in 1811, British agents in the USA made sure that the twenty year charter of the First Bank of the United States was not renewed. Then came the War of 1812, in which Britain invaded and burned down Washington, D.C. But that was just the beginning! Because the US National Bank was now gone, the British launched all-out trade and financial warfare on America. As proof, Mr Bentham’s associate Henry Brougham (later Baron Brougham and Vaux) bragged of this warfare in a famous speech in the House of Commons on April 9 1816, which included Britain’s “free trade” dumping of every conceivable product upon America, even at a loss, to wipe out America’s domestic manufacturers, saying “Every thing that could be shipped was sent off; all the capital that could be laid hold of was embarked… it was well worth while to incur a loss upon the first exportation, in order, by the glut, to stifle in the cradle those rising manufactures in the United States, which the war had forced into existence contrary to the natural course of things.” Now, this “natural course of things” meant that the British planned to keep America as merely a weak raw materials producer for the British Empire—precisely as they have done to my country. Later, in disguise, Mr Burr snuck back into the USA during that war to continue Britain’s financial and political subversion of the USA. With no national bank, and after 5 years of financial chaos from British Economic Warfare, the U.S. government in 1816 chartered the Second Bank of the United States along much the same lines to the original. This stabilized your financial system, and provided the means for an extraordinary economic development program of steel manufacturing, railroads and canals, called “internal improvements”. National banking, combined with Mr Hamilton’s other major policy initiative of high tariff protection to develop manufacturing, became known worldwide as the “American System”, in opposition to the “British System” of "free trade" and privately controlled “central banks”.