"Monarch of the dominant ethnicity" again, doesn't make sense. Most empires are not dominated by a single ethnic group.
Yes, you can force integration through liberal democracy by limiting migration and mandating certain policies. You don't allow enclaves to form in the first place.
True Civic Nationalism has been tried many times, and normally works. To be honest, true Ethno-Nationalism (where one and only one ethnic group exists and forms a single state), is almost literally never done, and normally doesn't form states larger than a few cities.
"Monarch of the dominant ethnicity" again, doesn't make sense. Most empires are not dominated by a single ethnic group.
Yes, you can force integration through liberal democracy by limiting migration and mandating certain policies. You don't allow enclaves to form in the first place.
True Civic Nationalism has been tried many times, and normally works. To be honest, true Ethno-Nationalism (where one and only one ethnic group exists and forms a single state), is almost literally never done, and normally doesn't form states larger than a few cities.