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because industry need many things to complete it work but it work does not complete with one thing so it need many levels

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Wiki User

11y ago
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ashna zahid

Lvl 2
3y ago

The purpose is to group industries and categorize them according to common characteristics and this system can help organize and compare statistical information such as import/export,employment,tax revenues, and /or wage information.

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Q: Why do you think is industries are classified into three levels?
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