From whom did the idea of separation of powers originate?

The concept of separation of powers, which divides government authority into distinct branches to prevent any one branch from gaining too much power, originated from Charles de Montesquieu, a French political philosopher. In his influential work "The Spirit of the Laws," published in 1748, Montesquieu argued that political liberty is best protected when the legislative, executive, and judicial powers of government are separate and balanced against each other. This idea had a significant impact on the framers of the United States Constitution, who incorporated separation of powers to ensure a system of checks and balances within the American government. Montesquieu's theories underscored the importance of limiting governmental power and fostering a system in which the branches can oversee one another, a principle that remains fundamental in contemporary governance.