Which city has the largest population in the world?

Tokyo/Yokohama is city with the largest population in the world. It has over 33 million people.

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.

Argon, carbon-14, and carbon-12