Which region has the largest number of the 10 most populous countries within its boundaries?

Hundred years ago, in the beginning of the 20th century the entire world population was less than 2 billion people.

Today, in 2017, the current world population has exceeded 7 billions (7,299,000,000).

The world’s population is growing by 200,000 people a day!, but death and birth rates have declined over the past several decades. (World Bank)

See some Demographic Data for the Countries and Regions of the World:

Top 25 countries by population

The most populated countries in the world.

Population Density

Countries with the highest population density.