War of 1812: Causes of the War

American shippers took advantage of the hostilities in Europe to absorb the carrying trade between Europe and the French and Spanish islands in the West Indies. By breaking the passage with a stop in a U.S. port, they evaded seizure under the British rule of 1756, which forbade to neutrals in wartime any trade that was not allowed in peacetime. In 1805, however, in the Essex Case, a British court ruled that U.S. ships breaking passage at an American port did not circumvent the prohibitions set out in the rule of 1756. As a result the seizure of American ships by Great Britain increased.

The following year Great Britain instituted a partial blockade of the European coast. The French emperor, Napoleon I, retaliated with a blockade of the British Isles. Napoleon's Continental System, which was intended to exclude British goods or goods cleared through Britain from countries under French control, and the British orders in council (1807), which forbade trade with France except after touching at English ports, threatened the American merchant fleet with confiscation by one side or the other. Although the French subjected American ships to considerable arbitrary treatment, the difficulties with England were more apparent. The impressment of sailors alleged to be British from U.S. vessels was a particularly great source of anti-British feeling, a famous incident of impressment being the Chesapeake affair of 1807.

Despite the infringement of U.S. rights, President Jefferson hoped to achieve a peaceful settlement with the British. Toward this end he supported a total embargo on trade in the hope that economic pressure would force the belligerents to negotiate with the United States. The Nonimportation Act of 1806 was followed by the Embargo Act of 1807 . Difficulty of enforcement and economic conditions that rendered England and the Continent more or less independent of America made the embargo ineffective, and in 1809 it gave way to a Nonintercourse Act. This in turn was superseded by Macon's Bill No. 2, which repealed the trade restrictions against Britain and France with the proviso that if one country withdrew its offensive decrees or orders, nonintercourse would be reimposed with the other.

In 1809, after the passage of the Nonintercourse Act, a satisfactory agreement had been reached with the British minister in Washington, David Erskine, who promised repeal of the orders in council. The pact was disavowed by Foreign Secretary George Canning, however, and Erskine was replaced by F. J. Jackson, who soon proved himself persona non grata to the U.S. government. Subsequently, by a dubious commitment, Napoleon tricked James Madison , who had succeeded Jefferson as President, into reimposing (1811) nonintercourse on England. Negotiations with Britain for repeal of the orders in council continued without result; just before the declaration of war, yet too late to prevent it, the orders in council were repealed.

In reality, it was not so much the infringement of neutral rights that occasioned the actual outbreak of hostilities as the desire of the frontiersmen for free land, which could only be obtained at the expense of the Native Americans and the British. Moreover, the West suspected the British, with some justification, of attempting to prevent American expansion and of encouraging and arming the Native Americans. Matters came to a head after the battle of Tippecanoe (1811); the radical Western group believed that the British had supported the Native American confederacy, and they dreamed of expelling the British from Canada. Their militancy was supported by Southerners who wished to obtain West Florida from the Spanish (allies of Great Britain). Among the prominent war hawks in the 12th Congress were Henry Clay , John C. Calhoun , Langdon Cheves , Felix Grundy , Peter Porter, and others, who managed to override the opposition of John Randolph and of the moderates.

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