DF, I had replied yesterday but can’t find it anywhere. Anyway, I think the commonality between a natural disaster and a economic collapse would be the need for the federal government to martial and begin distributing needed resources to large segments of the population. Food, medical supplies, fuel, etc. Factor in a growing dependent population, and they would be over-whelmed, certainly, as would local and state agencies. Possibly that would be the time the real social upheaval begins.
