Answer:
The system of checks and balances in government was developed to ensure that no one branch of government would become too powerful. The framers of the U.S. Constitution built a system that divides power between the three branches of the U.S. government legislative, executive and judicial and includes various limits and controls on the powers of each branch.
Separation of Powers
The idea that a just and fair government must divide power between various branches did not originate at the Constitutional Convention, but has deep philosophical and historical roots.
In his analysis of the government of Ancient Rome, the Greek statesman and historian Polybius identified it as a “mixed” regime with three branches: monarchy (the consul, or chief magistrate), aristocracy (the Senate) and democracy (the people). These concepts greatly influenced later ideas about separation of powers
being crucial to a well-functioning government.
Centuries later, the Enlightenment philosopher Baron de Montesquieu wrote of despotism as the primary threat in any government. In his famous work “The Spirit of the Laws,” Montesquieu argued that the best way to prevent this was through a separation of powers, in which different bodies of government exercised legislative, executive and judicial power, with all these bodies subject to the rule of law.
The U.S. System of Checks and Balances
Building on the ideas of Polybius, Montesquieu, William Blackstone, John Locke and other philosophers and political scientists over the centuries, the framers of the U.S. Constitution divided the powers and responsibilities of the new federal government among three branches: the legislative branch, the executive branch and the judicial branch.
In addition to this separation of powers, the framers built a system of checks and balances designed to guard against tyranny by ensuring that no branch would grab too much power.
If men were angels, no government would be necessary,” James Madison wrote in the Federalist Papers, of the necessity for checks and balances. “In framing a government which is to be administered by men over men, the great difficulty is this: You must first enable the government to control the governed; and in the next place, oblige it to control itself.”
