As in most other countries, the definition of urban areas in China is fairly complex. Since taking power in 1949 the Chinese government has defined and redefined the definition of "city" three times: in November 1955, in December 1963 and in October 1984. The article explores the structure of China's urbanization, and changes over time in the level of urbanization. (DÜI-Sen)
Africa is now the least urbanized of the continents but is becoming more so at one of the fastest rates in the world. The history of urbanization in Africa predates the birth of Christ; it may have developed as early as 3500 B.C. in the flood plain of the lower Nile for control and administration of the Nile Valley by the Pharaohs, though most of the ancient and pre-colonial African urban centers are now insignificant towns and some have become extinct. Between 1500 B.C. and 500 A.D., the Mediterranean coast of North Africa saw the creation of many cities, which flourished because of trade between the Phoenicians and Carthaginians.