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Separation of powers

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Governments have many big jobs to do. To keep things fair, many people believe these jobs should be split up. This is called the separation of powers. It means different groups hold different types of power.

Montesquieu 1
Montesquieu 1

Long ago, a man named Polybius studied the Roman Republic. He saw how different parts of the government worked together. Later, John Locke shared his own ideas in 1690.

John Locke by John Greenhill
John Locke by John Greenhill

Locke said there are different kinds of power. One kind is the power to make laws. Another kind is the power to carry out laws. He also spoke of a third power for foreign policy. Locke believed the law-making power was the most important. He said this power comes from the people.

Montesquieu was a French thinker who wrote about this in 1748. He said power should be split into three parts. These are the legislature, the executive, and the judiciary. The judiciary is the system of courts. Montesquieu wanted to make sure no single ruler had all the power.

Many governments use checks and balances too. This means each group can check on the others. It stops any one group from becoming too strong.

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File:John Locke by John Greenhill.jpg
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