I believe it would be B. Farming
Answer:
B) Lee's northward advance was stopped.
Explanation:
The battle of Antietam was the bloodiest battle in the American Civil War, and resulted in a pyrrhic victory for the Union, in which Lee's Northward advance was stopped, resulting in him retreating to recuperate his losses. This is also one of the major steps for the Union to go on the offensive, and would continue to be so with only a small delay in the battle of Gettysburg.
By far the single greatest factor that increased industrial efficiency was the creation of the assembly line, which allowed workers to focus specifically on a single task, which made them far more productive.
Answer:
d
Explanation: i had that same test
