Why did the Confederacy have a difficult time stopping Sherman?

This researchers data could him determine which of the following types of information about great britain during the industrial revolution

Me ! which of the following statements describes how the punic wars contributed to the development of the roman empire? a)they allowed the romans to focus more on expanding into the western mediterranean. b)they resulted in the overthrow of the roman republic and establishment of the empire. c)they marked the end of roman expansion in the mediterranean region. d) they forced the romans to reorganize their government with an emperor as ruler.

(05.04 mc) how did the roman transportation system keep the empire strong? plz