A memoir describes past events, but it is not considered a historical document. Why?

How does the conflict in this excerpt advance the plot? check all that apply. carew’s murder provides mr. utterson with a reason to search mr. hyde’s house and learn more about him. mr. hyde is found hiding in his home when mr. utterson and inspector newcomen search it. mr. utterson finds evidence on the victim that further ties mr. hyde to dr. jekyll. mr. utterson begins to dislike mr. hyde and becomes suspicious of his connection to dr. jekyll. inspector newcomen and mr. utterson find items that suggest mr. hyde has committed other crimes.