A global city (also called world city) is a city deemed to be an important node point in the global economic system An economic system is the system of production, distribution and consumption of goods and services of an economy. Alternatively, it is the set of principles and techniques by which problems of economics are addressed, such as the economic problem of scarcity through allocation of finite productive resources. The economic system is composed of. The concept comes from geography Geography is the study of the Earth and its lands, features, inhabitants, and phenomena. A literal translation would be "to describe or write about the Earth". The first person to use the word "geography" was Eratosthenes (276-194 B.C.). Four historical traditions in geographical research are the spatial analysis of natural and and urban studies and rests on the idea that globalization Globalization describes an ongoing process by which regional economies, societies, and cultures have become integrated through a globe-spanning network of exchange. The term is sometimes used to refer specifically to economic globalization: the integration of national economies into the international economy through trade, foreign direct can be understood as largely created, facilitated and enacted in strategic geographic locales according to a hierarchy of importance to the operation of the global system of finance and trade. The most complex of these entities is the "global city," whereby the linkages binding a city have a direct and tangible effect on global affairs through socio-economic means.[1] The terminology of "global city", as opposed to megacity A megacity is usually defined as a metropolitan area with a total population in excess of 10 million people. Some definitions also set a minimum level for population density . Megacities can be distinguished from global cities by their rapid growth, new forms of spatial population density, and both formal and informal economies, as well as poverty,, is thought to have been first coined by Saskia Sassen Saskia Sassen is an American sociologist noted for her analyses of globalization and international human migration. She is currently a professor of sociology at Columbia University and at the London School of Economics. Sassen coined the term global city. She is married to the sociologist Richard Sennett in reference to London, New York and Tokyo in her 1991 work The Global City,[2] though the term "world city" to describe cities which control a disproportionate amount of global business dates to at least Patrick Geddes Sir Patrick Geddes was a Scottish biologist, known also for his innovative thinking in the fields of urban planning and education. He was responsible for introducing the concept of "region" to architecture and planning and is also known to have coined the term conurbation' use of the term in 1915.[3]
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