 Complete the following phrase:  The markets declined after Sweden and the United States defeated the Barbary States in the Barbary Wars 18001815. A US Navy expedition under Commodore Edward Preble engaged gunboats and fortifications in Tripoli in 1804. A British diplomatic mission to Algiers led to the Dey to agree to release some Sardinian slaves. However, the moment the British left, the Dey ordered the Sardinians massacred; the same fleet joined by some Dutch warships returned and delivered a nine-hour 