<span>Floods provided water for crops.
Rate 5 stars if you felt this answer helped please!</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.
The Nile's overflow made for easy farming land. In addition, the Nile could provide easy irrigation and transport of materials.
