Final answer:
Baron de Montesquieu was the Enlightenment philosopher who introduced the separation of powers concept, emphasizing the importance of checks and balances in government.
Explanation:
Baron de Montesquieu was the Enlightenment philosopher who first popularized the concept of separation of powers among government branches. He believed in dividing governmental powers to prevent abuse and ensure checks and balances. Montesquieu's ideas influenced the formation of the United States Constitution and the framework of American government.
Learn more about Enlightenment philosopher Baron de Montesquieu and separation of powers here:
https://brainly.com/question/28788848
