Which factor influence the growth of Christianity and east Africa?

Caravans of Christian’s traveling through the trans Sahara trade network
Trade with Greeks and Romans
Invasion of Molly’s Christian military
Mona Moussa pilgrimage to Mecca

The factor that influenced the growth of Christianity in East Africa is the caravans of Christians traveling through the trans Sahara trade network. This allowed for the spread of Christian teachings and practices to reach communities along the trade routes in East Africa.