Nation is a solidified unit of people tied up by common history and cultural heritage with full of emotional, psychological, and spiritual bonds.

Having an occupied territory is an essential requirement for nation.

USA is considered the biggest state in the world in terms of geographical size.

In a bigger scene, the world today is comprised of 155 states

In the past, China had implemented the Two Child Policy to pursue economic modernization.

There can be no state without fixed territory which includes land, water and air space.

Singapore is considered an authoritarian state which is being ruled dominantly by a single party for several decades.

When a state is duty-bound to make and enforce laws and collect taxes over its territory then it exercises its sovereignty.

The legal existence of state can operate without the possession of sovereignty.