The Portuguese colonization of Africa was less important to John's colonial priorities compared to the Americas and Asia. Minor contentions with Dutch corsairs blocking shipments to and from the Portuguese Gold Coast in the 1720s resulted in successful Portuguese victory over the Dutch in minor naval battles. Notable, tensions were also raised with Britain in 1722 when British forces established a fortification in Cabinda (in modern-day Angola), which had been claimed and evangelized by the Portuguese since the 15th century. A notable rare exception to the long-standing Anglo-Portuguese Alliance, John ordered galleons from the "Armada do Brasil" to dispatch to Cabinda to either take possession of the fort or destroy it and its men, resulting in a Portuguese victory in 1723. Portugal briefly reconquered Mombasa (modern-day Kenya) in 1728, only to lose control over it again in 1729, ending the last period of Portuguese rule in Mombasa.