slowed partly because cities of medium size are growing more rapidly than previously. While smaller nations may have one “primate” city that dominates all, larger and more populous nations (such as India, China, Indonesia, Nigeria, and Brazil) have numerous cities with a population of a million or more in addition to the mega-cities. 5. The importance of smaller cities. The growth of mega-cities illustrates the growth of all cities of various sizes. While the mega-cities are larger than cities have