The separation of powers refers to the allocation of governmental authority among distinct branches—legislative, executive, and judicial—to ensure institutional oversight and reciprocal responsibility. This concept, grounded in ancient ideas and developed by philosophers such as Locke and Montesquieu, focuses on preventing the accumulation of power.
Jefferson emphasized its significance in self-governance, whereas Story underscored its function in balancing federal and state jurisdictions. Calhoun and Taylor discussed its implementation, highlighting interbranch checks to maintain stability. These viewpoints collectively define the separation of powers as a structural defense against despotism, influencing modern democratic systems through established limitations.