The cities of the 19th century grew at a tremendous rate thus planning (a technical and political process that is focused on the development and design of land use) and architecture went through a paradigm shift at the turn of the 20th century,
The industrialized cities of the 19th century grew at a tremendous rate. Planning and architecture went through a paradigm shift at the turn of the 20th century. Urban planning, also known as regional planning, town planning, city planning, or rural planning, is a technical and political process that is focused on the development and design of land use and the built environment, including air, water, and the infrastructure passing into and out of urban areas, such as transportation, communications, and distribution networks and their accessibility. 
