<P> The archaeological evidence for pearling on site comes primarily from the tools used by the divers such, as pearl boxes, diving weights, and small measuring weights used during trading . </P> <P> Zubarah was the focal point of an extensive regional trade network during its peak in the late eighteenth century . Until the introduction of the cultured pearl in the early 1900s, the trade in pearls constituted the Persian Gulf's most important industry, employing up to a third of the male population in the region . Zubarah, being one of the focal pearling and trading towns, contributed to the geopolitical, social, and cultural trajectories of Gulf history which shape the region today . </P> <P> Ceramics, coins, and the remains of foodstuffs from the excavations attest to Zubarah's far reaching trade and economic links in the late 18th century, with material deriving from eastern Asia, Persia, the Ottoman Empire, Africa, Europe, and the Persian Gulf . Diving weights and other material culture show how closely the connection between the daily life in the town and the pearl fishing and trading were . The discovery of coffee cups and tobacco pipes in the excavations reveal the growing importance of these commodities all over the Persian Gulf during the eighteenth and nineteenth centuries . The etching of a merchant's dhow, the traditional wooden boat of Arabia, found incised into the plaster in a room of a courtyard building, details how intimately the town's inhabitants associated their daily lives with long - distance maritime trade and commerce . Date trade also had an important role in the local economy . </P> <P> A complex array of small storage rooms have been identified as part of the souq (market) of Zubarah . The wide variety of trade objects that have been found in the rooms points towards the area's classification as a place of trade . The souq would have been the centre of the town and of its economy . Various commodities, including ironsmithing, were sold at this souq . </P>

Qatar’s largest body of water is a unesco world heritage site