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

Great Britain opposing other nations.
Great Britain supporting other nations.
Great Britain opposing slavery.
Great Britain supporting slavery.