It is from Crash Course World History. It is at around 11 minute and 58 second. Here is the context:
Pierre Clastres argues that this so-called primitive Amerindian societies of South America were not in fact ancient societies who had failed to invent settled agriculture or state forms, but previously sedentary cultivators who abandoned agriculture and fixed villages in response to the effects of conquest.
It seems to me that the host means that the cultivators adapt villages in response to the effects, but I may be wrong because I have checked the word in a few dictionaries, and they don't give this definition. That is why it is unclear to me what the host really means by that.