Comparing, the answer is either comparing or contrasting.
Answer:
I'm pretty sure that it's true.
Yes, rum is exclusively made with molasses and was one of the main reasons molasses was even used.
The farmer: he does not spread culture.
illness: it is a diffusion, but not of culture
The <span>development of a writing system : it is cultural, but there is no diffusion involved
a merchant traveling to sell his goods in another society- yest, this is true! the goods are connected to culture, and the merchant traveling is contributing to the diffusion!</span>