The closest would be the Orthodox Church as they share over 99 percent of Catholic theology. There are a few differences that are currently preventing the two churches from again uniting. That would...
No, there are many religions that predate Catholicism, Judaism for example. However, Catholicism is the first and original Christian religion, dating back to Christ and the apostles.
It is the biggest church that falls under the Christian religion. More than half of Christians are Catholic worldwide. The Anglican Church and Orthodox Church are examples of churches who've formed...
Christianity is the religion of a "Catholic church" Also known as Roman Catholic. When spelled entirely in lower case, catholic, means the whole church universal and not related to any one sect or...