Answer: The Liberator William Lloyd Garrison.
Explanation:
The said work is a manifesto intended to abolish the slave-owner relations primarily in the South. This work has reached great popularity and has inspired thousands of people around the world. The mentioned work is a manifestation of the fight against slavery, and the author himself was actively involved in the fight against slavery in other ways. Garrison traveled to Europe to present his work. The author viewed moral beliefs as a suitable mechanism in the fight against slavery.
