Answer:
A.) Massachusetts freed all remaining slaves during the Revolution
Step-by-step explanation:
During the American Revolution, some northern states were already preparing to create an alley that would prohibit slavery in their territories, thus making all slaves free. Immediately after the Revolution, the state of Massachusetts was the first to adopt this law because it wanted to promote equality between individuals, use black labor in industry and because many blacks fought in the war during the Revolution, among these blacks was Caesar Robbins.