In terms of religion, it is the Catholic Church. In terms of a building Saint Patrick's Catholic Cathedral in Armagh would be the main church.
Roman Catholic Church
The Roman Catholic church, The church of england, The methodist church
Catholic and the Church of Ireland.
Christianity is the main religion, and the Catholic Church is the main denomination.
Protestant and Roman Catholic.
The Mass is the central service of the Catholic Church. Nearly all services, such as weddings and funerals, are incorporated into a Mass.
There were a few things that the catholic church reformed. One of the main things they did were created new religious orders.
The main difference is that the Catholic Church has a lot more bright colours, whereas the Protestants are more bland.
A Catholic Church has as its main focus a Sanctuary which contains an Altar, Ambo, and the Tabernacle which are all used in the Celebration of the Most Holy Mass.
61% of Chileans belong to the Catholic Church.
Ah, not sure what you are asking here. The "Roman" Church usually is the Anglican way of referring to the Catholic Church as the Pope, who is Christ's Vicar on earth, and thus head of the Catholic Church, is the Bishop of Rome. Thus if you are using "Roman Church" in that way, it is the same thing as the Catholic Church. If you are not using Roman to refer to the Catholic Church, then you will have to reword you question as I have no idea what you're talking about.