What was promised to slaves thag encouraged them to fight for the british?

           im not quite sure what thag means but hope i helped

Proclamation issued offering freedom to slaves who agreed to fight for the British. In November of 1775, Virginia's royal governor, John Murray, fourth earl of Dunmore, issued a proclamation in response to information that the colonists had begun forming armies and attacking British troops.

They were promised freedom (I hope this helped) :)

the year 2019 marks the 2115th anniversary of his birth.