Answer: Historical allusion
This is missing in your question:
Read the excerpt from act 1, scene 3, of The Tragedy of Julius Caesar and the background information on the allusion it contains.
Excerpt:
CASSIUS. There's a bargain made.
Now know you, Casca, I have moved already
Some certain of the noblest-minded Romans
To undergo with me an enterprise
Of honorable dangerous consequence.
And I do know by this, they stay for me
In Pompey's Porch. For now this fearful night
There is no stir or walking in the streets;
And the complexion of the element
In favors like the work we have in hand,
Most bloody, fiery, and most terrible.
Step-by-step explanation:
Allusion is considering indirect reference to some place, ideology, thing or a person that has significance that can be literary, religious, cultural or historical. Allusion from the above is historical one because it is describing ''The Tragedy of Julius Caesar'' and it has evidences that are historical and accurate.