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.
<span>World War I is called the first modern war due to the influence of "industrialization," since this led to the creation of weapons that were far more powerful than any in the past. </span>
The answer to this question is B. This resulted in a rise in socialist and anarchist movements.
