Persian control over the Persian Gulf waned during the later half of the 18th century. At this time, Bahrain archipelago was a dependency of the emirate of Bushehr, itself a part of Persia. In 1783, the Bani Utbah tribal confederation invaded Bahrain and expelled the resident governor Nasr Al-Madhkur. As a result, the Al Khalifa family became the rulers of the country, and all political relations with Bushehr and Persia/Iran were terminated.  Ahmed ibn Muhammad ibn Khalifa (later called Ahmed al-Fateh, lit. "Ahmed the conqueror") become the dynasty's first Hakim of Bahrain. Political instability in the 19th century had disastrous effects on Manama's economy; Invasions by the Omanis in 1800 and by the Wahhabis in 1810–11, in addition to a civil war in 1842 between Bahrain's co-rulers saw the town being a major battleground. The instability paralysed commercial trade in Manama; the town's port was closed, most merchants fled abroad to Kuwait and the Persian coast until hostilities ceased. The English scholar William Gifford Palgrave, on a visit to Manama in 1862, described the town as having a few ruined stone buildings, with a landscape dominated with the huts of poor fishermen and pearl-divers.