How did separation of powers impact history?

The separation of powers, a principle articulated by Enlightenment thinkers like Montesquieu, profoundly influenced the development of democratic governance, particularly in the United States. By dividing government into distinct branches—executive, legislative, and judicial—this system aimed to prevent the concentration of power and protect individual liberties. Historically, it has fostered checks and balances, ensuring that no single branch becomes too powerful, thereby promoting accountability and stability. This framework has inspired various democratic movements worldwide, shaping modern political systems.