Who came up with the separation of powers?​

Separation of powers is a political doctrine originating in the writings of Charles de Secondat, Baron de Montesquieu in The Spirit of the Laws, in which he argued for a constitutional government with three separate branches, each of which would have defined abilities to check the powers of the others.

Explanation:

I'm not sure if it's multiple choice or write in, but Charles was the first to coin the idea, while Baron introduced it fully first.

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they can increase to boost the enonomy.

c. reserves power to the states and people