Jefferson’s desire to keep government and the military small met a severe test in the western Mediterranean Sea, where U.S. trading interests ran afoul of several states on the northern coast of Africa. For well over a century, Morocco, Algiers, Tunis, and Tripoli, called the Barbary States by Americans, controlled all Mediterranean shipping traffic by demanding large annual payments (called “tribute”) for safe passage. Countries electing not to pay found their ships and crews at risk for seizure. After several years in which about a hundred American crew members were taken captive, the United States agreed to pay $50,000 a year in tribute.

In May 1801, when the monarch of Tripoli failed to secure a large increase in his tribute, he declared war on the United States. Jefferson considered such payments extortion, and he sent four warships to the Mediterranean to protect U.S. shipping. From 1801 to 1803, U.S. frigates engaged in skirmishes with Barbary privateers.

Then, in late 1803, the USS Philadelphia ran aground near Tripoli’s harbor and was captured along with its 300-man crew. In early 1804, a U.S. naval ship commanded by Lieutenant Stephen Decatur sailed into the harbor after dark and set the Philadelphia on fire, rendering it useless to the Tripolitan monarch. Later that year, a small force of U.S. ships attacked the harbor and damaged or destroyed nineteen Tripolitan ships and bombarded the city, winning high praise and respect from European governments. Yet the sailors from the Philadelphia remained in captivity.

In 1805, William Eaton, an American officer stationed in Tunis, requested a thousand Marines to invade Tripoli, but Secretary of State James Madison rejected the plan. On his own, Eaton assembled a force of four hundred men (mostly Greek and Egyptian mercenaries plus eight Marines) and marched them over five hundred miles of desert for a surprise attack on Tripoli’s second-largest city. Amazingly, he succeeded. The monarch of Tripoli yielded, released the prisoners taken from the Philadelphia, and negotiated a treaty in 1805 with the United States.

Periodic attacks by Algiers and Tunis continued to plague American ships during Jefferson’s second term of office and into his successor’s presidency. This Second Barbary War ended in 1815 when the hero of 1804, Stephen Decatur, now a captain, arrived on the northern coast of Africa with a fleet of twenty-seven ships. By show of force, he engineered three treaties that put an end to the tribute system and provided reparations for damages to U.S. ships. Decatur was widely hailed for restoring honor to the United States.

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