I believe the answer to this is ratification. Hope this helped!
Both Byzantine Empire and Rome were all Christian country. But they had different version of Christianity. For example, Romans thought Roman pope was the head of Christians in the world, but the people of Byzantine didn't think so. They had their own head of Christianity
It would be B.) it just makes the most sense.
Answer:
What is nationalism?
Explanation:
Nationalisim, is when a country only focuses on its own interests or another single nation, and excludes the interests of all other nations