It is the most populous city and in the United Arab Emirates (UAE), Dubai is located on the southeast coast of the Persian Gulf and is one of the seven emirates that make up the country. Today, Dubai has emerged as a cosmopolitan metropolis that has grown steadily to become a global city and a business and cultural hub of the Middle East and the Persian Gulf region. It is also a major transport hub for passengers and cargo. Dubai's oil revenue helped accelerate the early development of the city. Its Western-style model of business drives its economy with the main revenues now coming from tourism, aviation, real estate, and financial services. Dubai has recently attracted world attention through many innovative large construction projects and sports events. Dubai was rated as one of the best places to live in the Middle East by American global consulting firm Mercer.