Answer:
The Republican Party believed slavery could deprive mass people from their rights.
Step-by-step explanation:
The Republican Party believed the classical liberalism, economic reform and opposed slavery.
The abolition of slavery would, in 1865, be formally implemented after the adoption of the Thirteenth Amendment by Lincoln, and the Republican Party which has been treated as their greatest legacy.
Republicans worked to secure the Thirteenth amendments and granting the former slaves that their president freed equality under the law.