Answer: Simple. They did not have production lines before Ford.
Explanation:
On December 1, 1913, Henry Ford installs the first moving assembly line for the mass production of an entire automobile. His innovation reduced the time it took to build a car from more than 12 hours to two hours and 30 minutes. The most significant piece of Ford's efficiency crusade was the assembly line.
The correct answer to your question would be D.
The Rape of Nanjing was significant because of the sheer volume of people who were massacred, because it was actually a direct act of manipulation and terrorism, these two things made also the United States more attentive towards the happening in the Pacific as it saw that the Japanese had an increased growth in influence over this region.
I would put something simple like Very Aggressively
The supreme law of the land in known as the Constitution of the United states. It contains a bill of rights that can be revised and additions can be.made and repealed.