When examining countries before they were populated with immigrants, one of the things that we notice is that each nation had its own unique culture. Each state had a distinct “difference” that wasn’t shared with people from other countries. It was only through the years of globalization and people moving from one nation to another that a culture was spread throughout the world.
In the past, however, the concept that sovereignty protected difference, is definitely one that we saw between countries. Through its own form of government, each state (with its sovereignty) protected its culture – including language, religion, social norm, etc. – allowing it to be unique and different from others. It is because of different groups of culture in the past, that people decided to create boundaries between each other and make themselves sovereign. Unfortunately, as nations such as France and the United Kingdom became modernized, people from other countries decided to move to these countries in hopes of starting a new life.
This is not to say that sovereign counties today does not continue to protect its difference. Many nations today have a mix population with immigrants coming in and out, but people in their own country still maintain a strong pride for their unique culture. While I agree that sovereign protects a state’s difference, I wonder, however, if the “difference” from all the countries eventually become one if populations continue to mix.