How did the work of Hogarth present a "moral tone"?

Question

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The Answer is His work satirized the social milieu of the day. He presented the immoralities of the elite, documenting their vices and their failures. He presented his work as a series of chapters in a book or scenes from a play. The viewer follows the characters, visually, through their mean and dishonest lives. Hogarth's work was very popular as it could be easily understood and the final episode always ended with the main characters recanting their lifestyles.

How Did the Work of Hogarth Present a "Moral Tone