What does "send..reeling" mean here?

A full-blown dollar crisis on top of a credit crunch and a weakening economy would be frightening. It would send financial markets reeling and tie the hands of the Fed, perhaps forcing it to raise interest rates even as recession looms.
Make the financial markets unsteady/unbalanced.

to move with great irregularity and unsteadiness (as of a ship in a storm, a building in an earthquake)

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to send it spinning with the danger of falling

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