Obviously the answer to this question is not going to be a single factor. If anyone tells you that there is a single-factor explanation for societal collapses, you know right away that they're an idiot. This is a complex subject.
Òbviament, la resposta a aquesta pregunta no serà un sol factor. Si algú et diu que hi ha un sol factor pel qual una societat s'ensorra, saps immediatament que és un ignorant. Aquest és un tema complex.