New to me ... hmm, 1775, 1860, 1940 ... is 2020 the next crisis?
Actually we are already in it. The crisis is not necessarily a single “event” but a time.
The 1940s was actually a period that started with the economic disruption of the early 1930s.
It is expected to come to a peak in the 2020-2025 period.
And if you believe the predictions about a Sino-American conflict, that sounds about right.