The Bank of Amsterdam, the world’s first true central bank was established in 1609.
It was followed shortly by Tulip Mania, which peaked in 1637.

The Bank of England, Britain’s first central bank, was established in 1694…
It was followed shortly by the South Sea Bubble which engulfed many British stocks, most notably the South Sea Company.

The Federal Reserve System came into existence on December 23, 1913.
It was followed shortly by the roaring 20s and the crash of '29.
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Market exuberance is a very very poor indicator of economic health
and an even-poorer indicator of future market exuberance.