Question: Abba Garima Monastery is a member of one of the few pre-colonial Christian Churches in Sub-Saharan Africa that gained what in 1959?
Sentence (from "Ethiopian Orthodox Tewahedo Church"): One of the few pre-colonial Christian Churches in Sub-Saharan Africa, the Ethiopian Orthodox Tewahedo Church has a membership of between 45 and 50 million people, the majority of whom live in Ethiopia.
Relevant evidence: Yes