Old industrial cities related primarily with their local regions but global cities are increasingly integrated with the international flow of capital, goods, people and ideas. Many successful global cities are increasingly detached from their hinterlands. There's a growing divide between places left behind by global economic change and the cosmopolitan city centres that have benefited from it. Global cities, global problemsĪnother challenge for global cities is how they relate to the regions that surround them. Sydney and Melbourne also have a very high level of car dependency, and a relatively low level of mass transit coverage, compared with many pre-eminent global cities. Both have much lower population densities than most cities given the "global" tag. However, Sydney and Melbourne have some attributes which undermine their claims to global city status. Together, Sydney and Melbourne accounted for 42 per cent of Australia's gross domestic product in 2015-16, analysis by consultancy SGS Economics and Planning found. A Melbourne city-state would rank among the world's 50 biggest economies when measured in US dollars. If Sydney were a city-state like Singapore it would rate among Asia's 10 largest economies and in the world's top 40. ![]() Sydney's economic output topped $US300 billion last financial year, comparable to the gross domestic product of Hong Kong or Malaysia when measured in US dollars. It is easy to underestimate the economic clout of Melbourne and Sydney.
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