Answer:
To unite - it helps to create a normed identity through the region, and it shows the pride of that region
To divide - it can create tension with other cultures if you can't understand each other, and it can create communication problems within the culture itself
hope it helps ! :))
Unite: A language can unite the people who speak the same language through patriotisms.
Divide: A language can also divide a culture by causing tension in groups who cannot communicate with each other because they speak a different language
