A metropolitan area with a total population exceeding 10 million residents constitutes a significant urban agglomeration. These areas are characterized by high population density, extensive infrastructure networks, and complex socio-economic systems. Tokyo, Japan, serves as a prominent example, boasting a population significantly surpassing the stated threshold.
The study of these urban centers is crucial within population geography due to their substantial impact on global resource consumption, environmental sustainability, and economic development. Historically, the emergence of these large urban areas reflects patterns of migration, industrialization, and globalization, shaping demographic landscapes and influencing cultural diffusion across regions.