It's C
The north had the money, the people, and the industrial power to branch out the railroad networks. So following markets and money. The north built networks to the west.
The south in contrast was did not have the capacity to construct as much railroads as the north did so therefore there was less western expansion. As well the south had more interests building canals and shipping product of the states to England.
Both men and Women can vote in elections in Afghanistan is false
So if it is in all states and national elections then that must mean it is the result of the 19th amendment that would have allowed women the right to vote.