Western business suits in the 20th century.

Types

Five major types of cultural diffusion have been defined:
* Expansion diffusion: an innovation or idea that develops in a source area and remains strong there, while also spreading outward to other areas. This can include hierarchical, stimulus, and contagious diffusion.
* Relocation diffusion: an idea or innovation that migrates into new areas, leaving behind its origin or source of the cultural trait.
* Hierarchical diffusion:

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