The development of nation-states began
-immediately after the fall of rome
-before the age of empires
-in recent times
-during the development of early human societies

The correct answer is -in recent times

States based on nationality are a relatively new term because only in recent times have people started to really feel the connection with their countrymen. In the past, many people would never even leave their village, meaning they would not even know what their own country is like. 

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