Abstract
An urban agglomeration is one of the biggest drivers of national or global economic development since its cities are interconnected. The world's population was 55% urban in 2020, compared to 52% in developing countries (United Nations, 2020).Land usage statistics for small and medium-sized town centers were analyzed using primary and secondary sources. Semi-structured interviews capture 30 experts' thoughts. Reviewing historical planning papers, maps, census records, and other secondary data. Hybrid data analysis. GIS and qualitative research study urban agglomeration and spatial formation. Space Syntax and its integration measure street-to-street transitions to define urban design. Space syntax illustrates population integration and interaction. The Landscape Expansion Matrix controls dynamic systems.Research shows Colombo urbanized nuclear style before 1970. That impacted neighboring municipalities and suburbs for 50 years. After the 1990 Open Economy, outer-circle suburbia expansion began. The Civil War halted suburbanization (2001). Rapid exurban growth created ribbon-shaped urban districts. Development plans for Megacity Colombo City after the 2009 civil conflict advocated corridors and extensive urbanization.
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