Which of the following is not an example of an effort to curb cultural diffusion?

Cultural diffusion in description is the dissemination and spread of a certain belief or social exercises from a certain society or throng of individuals to other groups. We can provide an example of the English Language perhaps that is now the unified and standard language of almost many countries. This can illustrate cultural diffusion in a larger and demonstrative scale. For instance, the English language started at Europe or somewhere in England or United Kingdom, from hereon it was spread during the expedition and voyage in Mesoamerica and America from the British it was brought to Asia by Western colonizers. Americans thought English for example in the Philippines and various countries and now have their own forms but is the same standard and medium across countries.

Hope this is accurate.