To ensure border states remained in the union, he never said his goal was to end slavery, only that it was to save the union.
Because of their knowledge of how to hide, and confuse other people when they are fighting in a jungle or something, the guerill force would have the element of suprise when fighting a larger force.
The best statement regarding the impact of Valley Forge on the American Revolution would be that "<span>b. After the hardships of Valley Forge, the American army was stronger, prouder, and better trained," since the Continental troops had endured some of the harshest conditions of the entire war. </span>