Both countries have people who practice different religions. Not just Catholicism.
they are cathlic
they are cathlic
The religion that people practice or don't practice in a particular state or place is not important. All religions are in Pennsylvania.
They are primarily Roman Catholic
Religions do not divide Northern Ireland from the Republic of Ireland. What you are referring to is the fact that most people in the Republic of Ireland are Catholic and most people in Northern Ireland are Protestant. There are also a large amount of Protestants in the Republic of Ireland and a large amount of Catholics in Northern Ireland.
I think Buddhism and Shinto are some religions they practice there as well as Christianity and Baha'i.
Most Irish (both Northern Ireland and Republic of Ireland) are Roman Catholics.
The vast majority are Muslim (nearly 100%), with very small minorities of tribal religions and other religions like Christianity.
they were weired and stupid and married there brothers and sisters
Christianity is the most practiced religion in Brazil
Ireland is a Christian country. So it is the Christian God that most of the people of Ireland have. Jews and Muslims also worship the same God and there are Jews and Muslims in Ireland. There are some people of other religions in Ireland too that would worship other Gods.