What do we learn from different cultural identities and their coexistence in a region or country?

What do we learn from different cultural identities and their coexistence in a region or country?

The coexistence of different cultural identities  in a country is always a bit difficult because of each cultural Belief, practice, thought process, Established literary works, established festival Belief and so on.

The country in such a scenario always would adopt emotional or patriotism hypes every now and then drive it's people away from their real issue or to divert them from their beliefs.

A region would only be able to function independently as  per it's cultural Belief only if it is a sovereign country.