How does stock security help for the financial management of a country or company?

It provided opportunities for your assets to grow.

Explanation:

Funds that we accumulate will be more efficient if we invest it to other things (such as stocks , assets or Security.) .

Rather than letting that fund left untouched in a bank, most government and companies will invest that fund so the value will increase over time. One  example, Chinese government conduct this type of financial management by investing in stocks/security owned by US companies.

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