**4. Central business district**

*Sustainability in Urban Planning and Design*

**2. Urbanization**

growth ensuing sprawl.

lighted these factors [9].

urban areas of an exact size.

**3. Characteristics of urbanizations**

industrial estates and health centers, for sustainable living purposes. Al-Kheder et al. [6] explain urban-growth modeling using multitemporal satellite images.

Urbanization is a metropolitan development that is a response to often less understood implications of technological, economic, social, and political forces and to the physical geography of an area. The pattern of urbanization in India is characterized by a continuous concentration of population and activities in large cities. Kingsley Davis used the term "over-urbanization," "where in urban misery and rural poverty exist side by side with the result that city can hardly be called dynamic" and where inefficient, unproductive informal sector becomes increasingly apparent [7]. Another scholar, Breese, depicts urbanization in India as pseudo urbanization where

The considerable economic and livelihood opportunities in urban areas and an increase in accommodating immigrating populations result in greater urbanization. It is never seen as a vulnerability to environmental growth, but it is the accidental urban area and energetic urban growth, or the sprawl that influences the land use of any area that becomes a substance of concern through its habit in the loss of major farming lands. It is very important to study and determine the information and suggestions interrelated with the problem of unexpected urban

Urbanization is a global process in which most developing nations experience that has led to the rise of great metropolitans along with slums and squatter. At the same time, a notice concern is also about the exhaustion of natural resources, increasing pollution and environmental hazards apart from the development of urban-rural fringes and suburban divisions, a host of ecological and socioeconomic factors that have become remarkable challenges of the current era. Chandna high-

Urbanization is a universal phenomenon. It is a process of enrich growth in a country's urban inhabitants accompanied by an even huge development in the financial, political, and cultural importance of cities associated with rural areas. In "The Origin and Growth of Urbanization in the World," Davis explains and gives the world growth of population and the way of urbanization and growth stages. The term "urbanization" illustrates a development in the human population associated with the development of energy and resource consumption and widespread land use. Since the rise of population becomes more enrich, the need for goods and services is often driven by addition rather than just rapid population growth. Urbanization refers to a growth in the percentage of a population living in

The rapid growth of the population is a result of the sparing scientific and medical knowledge and is the fundamental reason for urban growth and population. However, the rapid development of the population in urban centers is also disturbed by economic development, which is decreasing the percentage of the population engaged in agricultural areas. Structural change in employment, especially the growth of the tertiary (service) sector, has led to an improved number of employments in urban areas. Most service firms need to be central business districts (CBDs)

to obtain benefits from close communication with each other.

people arrive in cities not due to urban pull but due to rural push [8].

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The central business district (CBD) is the main part of the city that contains the major commercial streets and main commercial buildings. Throughout history, the Central Business District has been characterized by land classification and land use changes that include residential, commercial, industrial, and administration purposes. These spatial changes have been used to support Central Business District development. However, in the wake of post war decentralization and the growth popularity of polycentric regions in both Europe and the US, much of this work has itself come under criticism. The main force of the criticism proposes that Central Business Districts are now more likely to practice for the development of suburban lifestyles. However, similar developments, such as core city regeneration, propose that CBDs are now at the heartbeat of a more extensive back to the city movement that (re)promotes the pleasant appearance of city area living through residential expansion, delightful cultural districts, and an urban cool cultural social scene.

The beginning of the 21st century, the Central Business District had turned into a discrete area of the metropolitan city and built-in residencies, retail shops, commercial malls, Central universities, recreational, government, financial institutions, health care centers, and culture centers. The urban area is located at workplaces or educational institutions in the CBD for regular movement. This includes students, doctors, academics, government officials and civil servants, business peoples, formers, and financiers. In the current era, the rapid development of residential expansion and the growth of shopping malls have given a new life to the Central Business District. In addition, multi residential buildings, mega-malls with theaters, Kochi Lulu international shopping mall is an example of a business district area as an entertainment and shopping center. City walk malls are also familiar in central business districts in an attempt to make the CBD a 24 × 7-hour working destination.
