The term "trias politica" or "separation of powers" was coined by Charles-Louis de Secondat, baron de La Brède et de Montesquieu, an 18th century French social and political philosopher. ... The intent is to prevent the concentration of power and provide for checks and balances.
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Explanation:
because they paid them to do that
cortez and the aztecs had a huge battle which in the end cortez won. the aztecs were poorly equiped and the cortez's men had armor and guns.