Hello, I'm a specialist in urban geography and population studies. When it comes to determining the largest city in the world, it's important to clarify whether we're talking about the largest by area, population, or metropolitan area.
As of my last update, Tokyo, Japan, is often considered the largest city by population within its metropolitan area. The
Tokyo Metropolitan Area is home to over 37 million people, making it the most populous urban area globally. However, if we're considering the city proper, which refers to the urban center and does not include the surrounding metropolitan area, the ranking might be different.
Please note that city rankings can change over time due to various factors such as population growth, urban development, and changes in the way cities are defined and measured.
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