What is an example of contagious diffusion why is it an example?

The spread of Islam from Mecca to all the other countries around it That's an example because Contagious Diffusion is The distance-controlled spreading of an idea, innovation, or some other item through a local population by contact from person to person.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.