I believe it affected all of the states, but it had the biggest impact on the southern states (confederate states).
Explanation: "all persons held as slaves within any States, or designated part of the State, the people whereof shall be in rebellion against the United States, shall be then, thenceforward, and forever free."
I apologize if this wasn't exactly what you needed!
True. A number of soldiers within the Continental Army, and especially Washington's during the Valley Forge incident would desert due to the poor conditions the army and campaign were in.
