A product is commodity when it is fungible. Commodities are raw materials like corn, wheat, copper, crude oil, etc.
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The correct answer to this is: checks and balances.
The system of checks and balances is the system by which branches of government are limited by other branches. This ensures that no one branch becomes too powerful.
Well, I have looked this up since you didn't add any options so I assumed a similar question would be found online. If your options are Germany, France, Britain and India, it would be India.
