Tripoli declares war on the United States

Background. The conflict arose from disputes over tributary payments for protection against piracy, established by the 1796 Treaty with Tripoli. In May 1801, the Pasha demanded an increase in tribute, estimated at $225,000, which was refused by President Thomas Jefferson. This refusal led to the declaration of war, initiating the First Barbary War (1801–1805).

Declaration of War. On 10 May 1801, Karamanli declared war on the United States. The declaration was not made through formal written documents but in the customary Barbary manner by cutting down the flagstaff in front of the United States Consulate. This act followed the refusal of the tribute demand and the failure to pay consular gifts.

American Response. President Jefferson, unauthorized to declare war, instructed commanders to protect American ships and citizens. Congress authorized the seizure of Tripolitan vessels. A naval force was sent to blockade Tripoli, joining a Swedish squadron that had been at war with the Tripolitans since 1800.