QUICK FACTS:
People groups: 1,050
Population: 688,658,205
Unreached people groups: 670
UPG population: 588,185,745
Unengaged UPGs: 246
UUPG population: 32,168,795
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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