If we look at the article's worst five crashes:<p><pre><code> 1. 1929 Crash & Great Depression
2. Lost Decade (Dot-Com Bust & Global Financial Crisis)
3. Inflation, Vietnam, & Watergate
4. WWI & Influenza
5. Great Depression & WWII
</code></pre>
Regarding the Great Depression (#1,4,5). The story that is often overlook according to the historians I have read is how the lack of a Federal Reserve and FDIC contributed to the Great Depression. As there was no Federal Reserve, little regulation, and no FDIC deposit insurance... when banks failed all of their customers became financially penniless. The reason why many of those banks failed was that they were at the "edge" already due to farmers taking out massive loans during WWI as American grain was in demand and when the war ended, many of those loans went bad. When the stock market crashed, that was the straw that broke the camel's back. If we had a Federal Reserve and FDIC back then, many of those issues could have been prevented.<p>#3 was a combination of the Arab Oil shocks and the Vietnam War dragging down the economy.<p>#2 is still a mystery to me. I don't understand how a speculative bubble was allowed to develop including the mortgage backed securities nonsense could trigger a decade long recession. I assume it was due to the repeal of <a href="https://en.wikipedia.org/wiki/Glass%E2%80%93Steagall_legislation" rel="nofollow">https://en.wikipedia.org/wiki/Glass%E2%80%93Steagall_legisla...</a>?