b. a large supply of immigrant labor (Irish and German laborers from the East, and primarily Chinese from the West)
Answer:
The answer should be D)
Explanation:
The Union general granted Lee favorable terms of surrender: allowing the men to return to their homes and letting the officers, cavalrymen, and artillerymen keep their swords and horses if the men agreed to lay down their arms and abide by federal law.
The Appilachian mountains was the greatest barrier, because it was crawling with Indian's that may have made them turn back.
