Answer:
For a reader to "blank" two or more things, the reader must consider how the things are different. Contrast. What is one way that "The Maori: Genealogies and Origins in New Zealand" contrasts with "The Raven and the First Men: The Beginnings of the Haida"?
Our two cats don't like to be put in their travel crates at all.
This is correct because weren't, aren't, and doesn't are all not grammatically correct.
Sibling rivalry is the jealousy, competition and fighting between siblings.