What Causes Recurring Financial Crisis? With intermittent economic meltdowns occ

What Causes Recurring Financial Crisis?
With intermittent economic meltdowns occurring all over the world, there could not be a more interesting research topic than this one, especially as experts are still trying to find the answer to this question.
This is the topic from the list of topics i want the research paper to be written on, attached are the instructions and guidelines if you could read it through properly