Question

What did the church do about the plague

Answer 1

When the plague arrived, people believed it to be a punishment of God. Therefore, they often turned to the Church for help. But since the priests and bishops could not actually offer a cure or even an explanation, the Catholic Church lost a lot of its influence and for many people, their view of the world changed drastically.

Answer 2

Before really answering, you need to know what plague the user is talking about, and what church.