Please elaborate on your question so I can help you..
As I've Researched it was in the 14 Century that it killed 60 percent of Europes Population about 50 million people.
Please correct me if I am wrong.
Answer:
B. It prevents the government from establishing a national religion.
Explanation:
i think it is the one i took the test also {i love gacha life}
ps: sorry if i get it wrong