officials were stationed in Patna, Cuttack, and Chittagong. The aristocracy was composed of the Zamindars of Bengal. The Nawab was backed up by the powerful Jagat Seth family of bankers and money lenders. The Jagat Seth controlled the flow of Bengali revenue into the imperial treasury in Delhi. They served as financiers to both the Nawabs and European companies operating in the region. The Nawabs profited from the revenue generated by the worldwide demand of muslin trade in Bengal, which was centered in Dhaka and Sonargaon. Murshidabad was a major center of silk production. Shipbuilding in Chittagong enjoyed Ottoman and European demand. Patna was a center of metalworks and the military-industrial complex. The Bengal-Bihar region was a major exporter of gunpowder and saltpetre. The Nawabs presided over an era of growing organization in banking, handicrafts, and other trades. Bengal attracted traders from across Eurasia. Traders were lodged at caravanserais, including the Katra Masjid in Murshidabad; and the Bara Katra and Choto Katra in Dhaka. Dutch Bengali trading posts included the main Dutch port of Pipeli in Orissa; the Dutch settlement in Rajshahi; and the towns of Cossimbazar and Hugli. The Danes built trading posts in Bankipur and on islands of the Bay of Bengal. Balasore in Orissa was a prominent Austrian trading post. Bengali cities were full of brokers, workers, peons, naibs, wakils, and ordinary traders. The Nawabs were patrons of the arts, including the Murshidabad style of Mughal painting, Hindustani classical music, the Baul tradition, and local craftsmanship. The second Nawab Shuja-ud-Din Muhammad Khan developed Murshidabad's royal palace, military base, city gates, revenue office, public audience hall (durbar), and mosques in an extensive compound called Farrabagh (Garden of Joy) which included canals, fountains, flowers, and fruit trees. The second Nawab's reign saw a period of economic and political consolidation. The third Nawab Sarfaraz Khan was preoccupied with military engagements, including Nader Shah's invasion of India. Sarfaraz Khan was killed at the Battle of Giria by his deputy Alivardi Khan. The coup by Alivardi Khan led to the creation of a new dynasty. Nawab Alivardi Khan endured brutal raids by the Maratha Empire. The Marathas undertook six expeditions in Bengal from 1741–1748. The Maratha general Raghunath Rao conquered large parts of Orissa. Nawab Alivardi Khan made peace with Raghunathrao in 1751, ceding large parts of Orissa up to the river Subarnarekha. The Marathas demanded an annual tribute payment. The Marathas