During the Middle Ages, the Church provide a number of important services for the common people. Clearly, the most important service of the Church, as far as the people of that time were concerned, was the business of providing spiritual support, saving souls. But there were other important church functions, as well.
The Church provided an alternate justice system, to which people who qualified could appeal, in order to avoid secular courts. Originally, this system was for clergy, but the question of who constituted the clergy was so vague that in time anyone who could read qualified. The usual test was whether the person could read the 51st Psalm.
The Church provided sanctuary for refugees. These were mostly individuals who had run into some kind of trouble, with the law, with abusive husbands, or with people they owed money. Appeal to sanctuary was nearly always respected, even by kings. There are records of queens who fled their husbands and went into sanctuary for the remainder of their lives, and there is one case of a woman who tried to assassinate a King of France being allowed to live out her life in a convent because it had provided sanctuary.
The Church was an arbiter between nations, and prevented wars from time to time.
The Church built and ran hospitals.
The Church provided shelter for travelers, originally pilgrims, but quickly anyone who came along.
Monastic organizations also provided security on the pilgrim roads.
Monasteries and Cathedrals built, staffed, and maintained schools and universities. During much of the Middle Ages, most people who were educated got their teaching from church organizations.
The Church was itself an institution in which the common people could rise in rank.
The Roman Catholic Church
The Catholic Church was the only church in the Middle Ages and the pope ruled the church and monarchies of Europe.
The Catholic church was the "state" and ruled the society of the middle ages.
There was one church and one religion in the middle ages and that was Catholic. So, any timeline would be of the Catholic Church.
The only church in the Middle Ages was the Catholic Church. I am not sure what the question is asking about the church.
A member of the Catholic church.
Most people of Western Europe, for most of the Middle Ages, were linked by a belief in Christianity, in the communion of the Catholic Church.
the orthrodox church
The Roman catholic church during the middle ages in Europe can best be described as a church that was a stable influence. This was during a time where central governments were weaker.
"indulgences".
The Catholic church was the only church so any religious celebrations or services were Catholic.
The influence of the Roman Catholic Church in the Middle Ages was a major factor in art and science. The Church had a tendency to stifle science while encouraging religious art.