Peace and trade brought a new prosperity. Bahrain was no longer dependent upon pearling, and by the mid-19th century, it became the pre-eminent trading centre in the Persian Gulf, overtaking rivals Basra, Kuwait, and finally in the 1870s, Muscat. At the same time, Bahrain's socio-economic development began to diverge from the rest of the Persian Gulf: it transformed itself from a tribal trading centre into a modern state. This process was spurred by the attraction of large numbers of Persian, Huwala, and Indian merchant families who set up businesses on the island, making it the nexus of a vast web of trade routes across the Persian Gulf, Persia and the Indian sub-continent. A contemporary account of Manama in 1862 found: