QUICK FACTS:
People groups: 1,387
Population: 1,271,895,390
Unreached people groups: 587
UPG population: 430,106,435
Unengaged UPGs: 230
UUPG population: 28,300,160
Number of countries: 144
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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