Political parties are elected by the people who represent the citizens of a country. The political parties that have power determine and shape the public policies. The question is which party, and that depends on the party that has won the elections or the ruling party in power. If a bill has to be passed, the majority of votes are required to pass the bill or to implement or execute the policy. Public policies are framed based on certain norms which, are adhered to. The norms are complied with by the parties to make sure that the public policies are in accordance with the public opinion. Political parties and elected authorities indeed represent and shape public policies that can be compared to a family and head of the family making decisions for the family.
The lack of discipline is the answer
The answer is: There was an increase in federal money for railroads and ports.
After the events of the Civil War much of the South was left devastated and thus one of the goals the federal government had in order to reunify the south was to first reconstruct it.
By implementing a reconstruction plan, the federal government invested money and infrastructure into the region in order to help industrialize and help push forward the southern economy.