The most basic purpose of slavery is to rid oneself of work and force the hideous labor upon someone else
So he could warn the minute men that the British were on their way to take the weapons cache from the colonists.
Could you translate the problem in english?
Answer: Each of the thirteen colonies had a charter, or written agreement between the colony and the king of England or Parliament. Charters of royal colonies provided for direct rule by the king. A colonial legislature was elected by property holding males.