Author(s): Tafahomi R
Urban spaces were changing in context and texture through of history. New forms and patterns of living in cities have changed the roles and forms of urban spaces. The interventional Powers include politics, economics, government, religion, ethnic impact on the forms and functions of urban spaces. This process of urban spaces evolutions have occurred in two categories includes: Internal existing causes and External prevailing causes. Internal existing causes include situation of progress and development in country. These causes arose in long time and many components involve in the process of changing include governmental, social, economical, and each part could have especial impact on the process. But in external prevailing causes, process of changing is very fast and people do not find opportunities for adaptation with this process include occupation foreigner forces and armies in changing of urban form and also natural disasters same as earthquake and flood. In Europe, Modernism had attempted to emphasize on roles and forms of urban spaces. But in Iran, Modernism reduced roles and forms of urban spaces. Though Modernism in Iran had begun with changing social, economical and political patterns, in substance show an internal role, but wide capacities of destruction of urban textures and non – adaptation of people behavior in urban spaces show Modernism in Iran have an external role in changing of urban spaces .