Answer:
they considered slaves valuable property that they wanted returned
Sinister means bad and so does malevolent
Answer:
An action verb is a verb that shows an action the subject of the sentence is always going to be performing an action the action can either be a physical action or a mental action
What a linking verb will do is it will connect the subject (a noun or a pronoun) with another word or words in the sentence that identify or describe that subject (noun or pronoun)
Its saying basically that there are hidden secrets underneath people. That every smile, nod or wave has a hidden agenda. It's like warning to be wary of who you trust.