World city and City-region: The Engine of World Economy

Historically, the first industrial revolution took place in the UK, so the development of productivity accelerated the process of urbanization. At that time, London became the world's largest economic center as a major city. In order to provide financial and other basic services, capital flows are at the forefront of industrial development and regional economic development. Today, the integration of the world economy is the essence of globalization. It includes capital investment, trade, finance, and optimal allocation of resources.

The second-tier world cities of Hong Kong, Buenos Aires, Chicago incorporate important regional economies into the global system. New York is the major city in North America, London is the major city in Western Europe, and Tokyo is the major city in the Asia Pacific region. Major and secondary cities in the world rely on major cities in the world to provide financial and political services and cities around the world provide the necessary facilities to support other cities. Their importance in the economy also makes them an important partner in the development of the major and secondary world cities. Cities in the world are part of an international global system

World cities' operations in the global system (regional network) The world's city hierarchy system shows that there are certain advantages in models from New York, London, Tokyo to other world cities. Regardless of the metropolis, metropolitan area, or middle-level, cities around the world are places where the world has accumulated. London, New York, Tokyo, which are the major cities of the world, are command centers of the global community and are the main exporters and exporters of goods and services. The major cities of the world, Sydney, Los Angeles and Singapore, combine large domestic economies with the world's systems and play a multinational role

Cities in these worlds are dominated by multinational companies that are part of an international global system that selects local cities as a strategic center to expand influence on the global economy. The development of cities in the world has been promoted by improving communication networks and technologies and improving ties between air cities among cities around the world. Hierarchical world The dominant position of a city has three levels: dominant, primary, and secondary.