Answer:
Give me that blue water bottle.
What I know about pronoun antecedent agreement is that when the pronoun agrees in number (referring to singular or plural) and person (referring to first, second, or third person) with its antecedent. Pronouns should agree in number, person, and gender with their antecedents. If the antecedent is singular, the pronoun should be singular. If the antecedent is plural, the pronoun should be plural.
You can of you want to......It's your choice
i think
<u><em>A sachem is the chief or leader of a tribe, and having anyone of your community do an act of defection (change loyalty to the opposite side) is the beginning of lots of issues, those including: treason, increasing number of deserters, a weakening tribe, etc. Those are the reasons why a sachem should be concern about defection.</em></u>