QUICK FACTS:
People groups: 1,236
Population: 819,700,425
Unreached people groups: 602
UPG population: 411,859,775
Unengaged UPGs: 258
UUPG population: 26,112,075
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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