Separation of powers is a foundational concept in the modern system of government. It is the idea that power is divided among the legislative, executive, and judicial branches of government. This ensures that no one branch has absolute authority over the others. Each branch serves a separate purpose and all are responsible for carrying out their duties as set by the Constitution. Separation of powers further ensures that each branch can effectively exercise its constitutional authority, which in turn provides a check and balance on the actions of the other branches. By limiting the ability of any one branch to exercise too much control, separation of powers allows citizens to be protected from potential abuse of power.