To use proper word choice in order to get your point across properly and not seem unprofessional or offensive
Ballad means 'slow'. Usually to desribe a songs pace.
<span>The strength of the novel is its slave narrative tone and its ability to demonstrate the pain of being owned by another human being. Many have heard of slavery; few know this story. It's too important to overlook.</span>
Answer: eloquently.
That means that he had managed to write in a well and effective manner, one capable to persuade, which sure is a motive of high satisfacton,specially for a journalist and activist.