MONTESQUIEU
Montesquieu brought about the concept of balance in politics that led to the conviction that three equal and coordinate branches of government should be established.
trias politica means seperation of power,these terms were coined by Montesquieu (Charles-Louis de Secondat, baron de La Brède et de Montesquieu).
He principally sourced the principle of seperation of powers. Montesquieu asserted that to promote liberty most effectively,that these three powers must be separated and made to act independently. He took the idea from the view that the Roman republic separated their powers and for that fact,no one could usurp a power that is complete.
Montesquieu came to the conclusion that the best form of government is one that the legislative, executive and the judiciary powers/arm of government are seperate in operation and each one keeps the other in check to avoid any of them from becoming too powerful,just as in the Louis XIV monarchy, would further result in despotism.