An allusion to "the waste land" in another poem would be an example of what? literary allusionhistorical allusionmythical allusionreligious allusion

literary allusion

Explanation:

An allusion is a literary device used to briefly or indirectly give reference to a person, place, or thing or something that is of historical, political, or literary significance. Just with the mention of this reference the reader have an idea of what the author is trying to tell about.

For instance, If someone is saying, "He's such a Scrooge", that means he is telling that the person resembles "Scrooge", the character of Dickens' Christmas Carol is.

In the same manner, if a poet of another poem is mentioning "The Waste Land" in his poem, then he is using "Literary Allusion", as he is giving reference of a literary work.

because each is self-sufficient.