I study countries! I think it's fascinating how each is a distinct entity in political geography!
What is a country?
It can actually mean several things. Most are independent sovereign states or a country could be occupied by another state. In the latter case, they are known as non-sovereign. 
How many countries do we have in the world
195! Can you believe that?! The concept of a country is very old. It comes from the latin word "contrata" which meant land spread before.
Wow I never knew, what more can you tell me about country
I recently read that the CIA World Factbook also considers uninhabited islands countries! Maybe that's why we have so many!