What did the pacific railway act of 1862 do?

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points.a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?

Congress could only request money and had no power to tax; each state made its own money; there was no national court system. which one of these weaknesses do you believe was the most important to correct?

Otto von bismarck once said that a great war might someday be caused by some damed foolish thing in the balkans was he right, explain