Answer:
Monks and Nuns wrote manuscript books.
They made medicine and operated hospitals.
They ran schools.
They carried mail from one place to another.
They provided refuge for those who sought it.
They protected pilgrims on the road, and provided places for them to stay.
In some places they sang in choirs to cathedrals.
Many of the great creative people of the Middle Ages, authors, composers, artists, scientists, and philosophers, were monks or nuns.