Final answer:
The events described by Benjamin Franklin regarding the influence of the Reverend Mr. Whitefield’s sermons in 1739 are most directly attributed to the spread of Protestant evangelism known as the First Great Awakening.
Step-by-step explanation:
The developments that most directly contributed to the events described in the excerpt from Benjamin Franklin's autobiography, concerning the impact of the Reverend Mr. Whitefield's sermons in Philadelphia in 1739, can be attributed to The spread of Protestant evangelism from Great Britain and Europe to the colonies. This movement is known as the First Great Awakening, a period marked by a surge in religious fervor and the spread of evangelical Protestantism.
The Great Awakening saw itinerant preachers like Whitefield and revivalists such as Jonathan Edwards, who rejected the formal modes of worship of the time in favor of a more emotional and personal religiosity. Preaching in open fields, drawing thousands of listeners, and affecting emotions were defining elements of this movement, emphasizing individual salvation through personal faith over doctrinal ritual.