Urbanization Of The 21st Century

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Introduction
The 21st century is witnessing an increase of the world’s population into urban dwellers. Dramatic movement of people into major towns and cities of the world is caused by rapid sprawl; this is observed in developed and developing countries. This increasing recognition is inevitable; therefore the solution to urban problems depends largely on effective planning, infrastructural management and development. Usually, unplanned population growth is associated to population demands that supersede infrastructure and service capacity, leading to the degradation of the environment.
Urbanization is important, but its development is effected at the expense of deforestation, destruction of biotopes, fragmentation of ecosystems, consequently shrinking of the open space among many other things. A city should be a complex system that should entail several interactive sub-systems, it should be affected by various factors including governmental land policies, population growth, transportation infrastructure, market behavior to mention just a few.
Land use and transportation systems are considered as the two most vital subsystems determining the long term urban form and structure. Meanwhile, urban growth is one of the most important topics in urban studies, and its main driving forces are population growth and transportation development. Rapid urban growth stresses the capacity of governments to provide adequate basic services such as road network.
Everyone has seen urban
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