Question

What is modern state and its features?

Answer 1

A state is a compulsory political organization with a centralized government that maintains a monopoly of the legitimate use of force within a certain geographical territory. ... Today, however, themodern nation-state is the predominant form of state to which people are subject. Some states are sovereign.

Four essential features: 

1) Population,Territory, Sovereignty, and Government.
2) The nature of a state's population affects its stability.

3) States where the populationshares a general political and social consensus, or agreement about basic beliefs, have the most stable governments.

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Answer 2

In the modern era, states have become the most important political units in defining the identity of most people. The main defining characteristic of a state is sovereignty. The concept of a sovereign state is centered on the fact that a state has independent authority over its territory.
I don't know features