This would say that the criseses that impact the poor are what lead to authoritarianism. You need the support of the poor to grab power for yourself, but it's hard to make supporting such a cause appealing unless death is the alternative.
Amartya Sen's work showed that famine is caused by failures of government, not agriculture. There are plenty of cases of people dying of famine when their countries were producing surplus food.
Frustratingly, i can't find a good accessible writeup of Sen's work online, but here's his original book:
https://www.prismaweb.org/nl/wp-content/uploads/2017/06/Pove...
Wikipedia has some detail about the Ethiopian famine in the '80s:
https://en.wikipedia.org/wiki/1983%E2%80%931985_famine_in_Et...
There are exceptions of course, like Yemen.
Plus, keeping enough supplies is one of government functions - through those prior French revolution the famines I recall were not in this category.
I'll provide another example. The cause of Ireland's Great Famine was the potato blight, and no one thinks that the British intentionally imported the blight to Ireland. The million deaths were the fault of the British, who chose to export food for more money rather than feed the starving people.
If computers came after electricity, they didn't cause electricity. That says nothing about the possibility of electricity causing computers, but it brings us forward nonetheless.
But, as the previous posters touched upon, there are some interesting philosophical issues at play here.
First, we have the old correlation vs. causation issue: https://en.wikipedia.org/wiki/Correlation_does_not_imply_cau...
Then even if there is causation, we need to ask which came first, the parasite prevalence, or the authoritarian government.
Then even if we know the answer to that, we then need to ask if a circular relationship is present, in other words A causes some of B, which in turn causes more of A, which in turn causes more of B.
Basically, if a virtuous or vicious cycle is present (virtuous if more of A and B are desired; vicious if less of A and B are desired; in this case vicious, since presumably less of A and of B are desired...)
It's sort of like you could ask if "breakdowns in society" are responsibile for authoritarian governments -- or if authoritarian governments are responsible for breakdowns in society...
Or, if a little bit of one caused a little bit of the other, which in turn caused more of the first, which in turn caused more of the second, and the cycle became a vicious cycle...
So, the roots of what could be a fascinating philophical discussion in that.
Its sort of like in Star Wars -- we could ask if the breakdown of society caused the early elements of the Empire, which in turn caused the Rebellion, which in turn caused the furher breakdown of society, which caused the further strengthening of the Empire, which in turn caused the further strengthening of the Rebellion (by opposition)...
Vader may have been a key player on one side... but he did not start all of those cycles going...