The notion of a subcontinent is based on the fact that this region rests on a tectonic plate of its own, separate from the rest of Asia.
... of 18, 8.7% from 18 to 24, 29.5% from 25 to 44, 21.0% from 45 to 64, and 13.5% who are 65 years of age or older. The median age is 35 years. For every 100 females there ...