The north liked his ideas because businesses there could accumulate more money and wealth.

it further strained relations between the north and the south and convinced

whats the question? im not quite understanding your question.

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

d. it gave farmers a way to organize for more political power