QUICK FACTS:
People groups: 1,331
Population: 1,237,837,255
Unreached people groups: 582
UPG population: 426,620,025
Unengaged UPGs: 234
UUPG population: 26,681,200
Number of countries: 141
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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