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.
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.