State the reasons that led to the spread of Christianity to many parts of the world.

Following reasons led to the spread of Christianity to many parts of the world:

1. Encouragement given by the Roman emperors to missionaries resulted in every nation in Europe embracing Christianity within a few centuries.
2. The efforts made by Christian missionaries.
3. Christianity was open to all: kings and nobles, poor and slaves and middle class.
4. The common people were influenced by the feelings of equality and brotherhood, concern for the poor, the sick and the orphans.
5. The excellent organisation of the Church and the spirit of sacrifice and dedication of its leaders made Christianity popular.