Also Read | List of Average IQ in Every State of the USA As expected, the top three largest cities by population belong to three of the most populous countries in the world. Japan, India ...

One of the world’s biggest cities is exploring ways of expanding in one of the most unconventional ways possible. The Japanese capital of Tokyo, home to more than 14 million people, has ...

Three US cities are also included on the list. The US, according to Wealth-X, has the largest billionaire population in the world. New York City alone houses more billionaires than almost any ...