An obvious requirement for a nation to bring its glory into the richness of heaven is that the best fruits of its distinctive contribution should grow in the soil of its culture. This can only happen when people are free to enjoy their own culture. This is why they hate being dominated by the culture of another nation. It seems that God approves each nation's cultural freedom. But there is also the paradox that God can permit a nation to be disciplined by others, and then rebuke the invaders for heartless and excessive force.
Culture requires a language of communication.
It is often suggested that if everyone spoke the same language all would be well. Esperanto has been promoted as the language that could save our world. In the first centuries when Christians were a persecuted minority in the Roman Empire there was a huge growth in the east by churches that used Syriac for their services. Others said Greek was the language of the Old Testament Septuagint and the New Testament, so Greek must be the language of God's choice. There are Greek Orthodox who imagine that to this day.