QUICK FACTS:
People groups: 1,050
Population: 688,656,890
Unreached people groups: 669
UPG population: 588,023,430
Unengaged UPGs: 245
UUPG population: 32,121,480
Number of countries: 133
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 founded by Jesus Christ and that its bishops are the successors of Christ.
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