According to Roosevelt what happens when to money when it is deposited into a bank

the bank does not put your money into a safe vault, to keep your money safe for you.

Explanation:

The bank re-invests your money. It invests your money in many different forms of credit,  in bonds, in commercial paper, in mortgages and in many other kinds of loans. The bank puts your money to work to keep the wheels of industry and of agriculture turning around.

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