This is a bit subjective, but it could be argued that social change had the biggest change in Southern life, since the abolition os slavery (which was inherently a social issue) led to the biggest changes.
Answer:
brought in more people by train and goods were now more easier to ship down south
Explanation:
The correct answer is C. A system of weights and measure for trade.
This is because the Harappan civilization did not establish a uniform set of weights and measures for use in trade.
When President Roosevelt said on December 7, 1941 that the date would live in infamy he meant that the day would be remembered as a dishonorable and disgraceful day in American history do to the large loss of life from the Pearl Harbor attacks. Therefore, out of these words Roosevelt was equating the attacks to being done in manner that could be equated with "dishonor."
I believe that is the Mayflower Compact