QUICK FACTS:
People groups: 1,240
Population: 810,572,395
Unreached people groups: 604
UPG population: 407,313,025
Unengaged UPGs: 245
UUPG population: 15,055,075
Number of countries: 132
Base Religion: Christianity
Description: Roman Catholicism is the largest branch of the Christian church and is among the oldest religious institutions in the world. The Catholic Church teaches that it is the one true Church found by Jesus Christ and that its bishops are the successors of Christ's apostles.
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