I'm not sure what the sample dictionary entry is, but an allusion is basically when something is being referenced indirectly. For example, I could say "I'm not the hero this town needs, I'm the hero this town deserves" and that would be an allusion to batman since I'm referencing the film without directly explaining where it's from.
Answer:
Opinion
Explanation:
It contains the word miserable.
Often the word miserable is said when giving an opinion.
Answer:
The leadership on the farm is a dictatorship. The pigs have all the power and choose who lives and dies. They also much like the Russian government take everything for themselves and make the people of lesser status do all of the work.