#1) How are they similar to "the slaves of political parties"?
Answer: Slaves wanted to be trusted by their overseers because this often would grant them privileges that other slaves did not have.
#2) Why does Douglass make this comparison?
Answer: Slaves would seek with great care to please their overseers to gain their trust, just as office-seekers in the political parties seek to please and deceive the people.
I hope it helps, Regards.
Answer:
Musical
relating to music
Radical
a group of atoms behaving as a unit in a number of compounds.
Technical
of, involving, or concerned with applied and industrial sciences
In James Thurber "The Night the Bed Fell", what starts confusion is the army cot the narrator sleeps in collapsing on him.