Dubai is the most populous city of Abu Dhabi located in the eastern part of the Arabian Peninsula on the coast of the Persian Gulf, Dubai aims to be the business hub of Western Asia. It is also a major global transport hub for passengers and cargo. Oil revenue helped accelerate the development of the city, which was already a major mercantile hub.The history of human settlement in the area now defined by the United Arab Emirates is rich and complex, and points to extensive trading links between the civilisations of the Indus Valley and Mesopotamia, but also as far afield as the Levant. Archaeological finds in the emirate of Dubai, particularly at Al-Ashoosh, Al Sufouh and the notably rich trove from Saruq Al Hadid show settlement through the Ubaid and Hafit periods, the Umm Al Nar and Wadi Suq periods and the three Iron Ages in the UAE. The area was known to the Sumerians as Magan, and was a source for metallic goods, notably copper and bronze.