The spread of Christianity refers to the diffusion and expansion of the Christian religion from its origins in the Middle East to becoming one of the largest religions globally.
Related terms
Diffusion: Diffusion refers to the process by which cultural traits, ideas, or innovations spread from one place to another.
Religious Conversion: Religious conversion involves changing one's religious beliefs and affiliations voluntarily.
Cultural Hearth: A cultural hearth is a region where cultural innovations originate and later diffuse to other places.