An expansive urban area characterized by a population exceeding 20 million residents, represents a complex, interconnected network of cities, suburbs, and exurbs. These regions often exhibit substantial economic, social, and cultural influence, extending far beyond their geographical boundaries. The Tokyo-Yokohama area, for example, exemplifies this, demonstrating a concentration of population, industry, and infrastructure that shapes regional and even global trends.
The emergence of these large urban areas signifies evolving patterns of human settlement and resource utilization. Their concentration of resources, talent, and infrastructure fosters innovation, economic growth, and cultural exchange. Historically, these areas have been centers of political power and economic strength, driving technological advancements and shaping societal norms.
