<span>Montesquieu's most lasting contribution to political thought was his promotion of the "separation of powers," since this was a staple of future democratic governments used to prevent tyranny. </span>
The words that are missing in the sentence are The Second Great Awakening and moral renewal. The so-called Second Great Awakening is referring to revival of religious during the early nineteenth century, where the preachers are advocating or sharing the message of spiritual and moral renewal to people.
Think about which man would agree with
i think
True... would be your correct answer I hope this helps!!