Answer:
Contagious diffusion
Step-by-step explanation:
Cultural diffusion refers to the spread of traits from one person or place to another. This is how cultural traits that originally belong to a particular area can be popularized somewhere else. This can occur with beliefs, technology, traditions, language, etc. A particular type of diffusion is contagious diffusion. This refers to a system by which diffusion is spread to a large number of people with no particular rule or system. Contagious diffusion also spreads o a way that does not recognize borders as it spreads. An example of this are images shared over social media.