Years ago a revolution in energy and industry began and spread rapidly all around Thailand. A major impact of the industrial revolution was that on urban society. The population of towns grew immensely because economic advantage caused that the new factories and offices be situated in the cities. The point of view of the city and urban life in general were strongly adapted and changed. Modern industry created factory owners and entrepreneurs who strengthened the wealth and size of the middle class. Beside the growth, the age of industrialization saw the appearance of a new urban working class. The life of this new group and its relations with the middle class are infamous issues to modern history. Some believe that the industrial revolution "certainly caused much human depression" and suffering. Some experts admit that industrialization conveyed economic development for the laboring classes. Many development activities dramatically change social relations. In place of real, natural relationships based on connection, developed cultures arrange themselves around more abstract, less constant, and naturally not the same lines. In particular, developed society is controlled around "class," that is, economic function, rather than relationship. Economic function makes a kind of social dissimilarity, as administrators, kings, and priests, come to inhabit economically more important roles (giving out and ruling) than others. While there is actually no such thing as social mobility in the ancient world, class is inherently unstable as a way of organizing society. Therefore, urbanization may lead to the meaning that the condition of being urbanized and the social process whereby cities grow and societies become more urban from the development such as industrial revolution or property business.