The georgia railroad ended for many years at a little settlement in the piedmont, which was named because the line stopped there. as the railroads grew in importance, the little town grew too. it was an important railroad hub by the start of the in 1861.

1. I believe the answer is monroe railroad.
Due to high budgets needed for the construction of the railroads, they tend to stop operations every a couple of years.
After thatThe name of the railroad keep changing depending how the company who most funding want to name it (it chaged from monroe to Macon and Western, to Georgia Railroad and Banking company)

2. I believe the answer is Union blockaded the ports
After the union blockage, almost all the majort transportation that relied on boat became suddenly unusable.
Becaus of this , many companies started to use railroads as their main distribution system.