What role did Christianity play in medieval society? In what areas of life has this role manifested itself especially clearly?

It played a rather important role. Especially when you consider the spiritual realm. Christianity was responsible for many aspects of social life: the birth of a child (baptism), wedding – the conclusion of marriage bonds, communion, various holidays, etc. That is, the church was an integral part of people’s lives. The church also influenced art and education as well. Despite this, the church hampered the development of scientific knowledge. Especially if you take Western Europe, where the emergence of some new scientific knowledge was equated with heresy. Also, the church played an important role in the political life of the country.