cities are in the less developed countries, while the most powerful world cities are mainly located in the developed … countries. It results that size seems to be neither a necessary nor a sufficient condition for obtaining the status of world … city. A condition to be a world city is the access to the economic power. A conventional city has a region behind, and …

Especially after 1990's, important results have emerged with the rapid transformation process in the world by the …, many cities around the world, especially with economic, spatial, environmental advantages come forward in the international …