Read the excerpt from “the morning dream.”

awaking, how could i but muse
at what such a dream should betide?
but soon my ear caught the glad news
which serv'd my weak thought for a guide—
that britannia, renown'd o'er the waves
for the hatred she ever has shown
to the black-sceptred rulers of slaves,
resolves to have none of her own.

the excerpt contains the theme of:

a. great britain opposing other nations.
b. great britain supporting other nations.
c. great britain opposing slavery.
d. great britain supporting slavery.