4. How did the expansion of railroads impact the development of the United States? a.
It caused little change because of the growth of the steamboat.
b. It made prices of goods increase in order to pay for more rail lines.
C. It made shipping products to markets easier and prices decreased.
d. It caused people to move closer to manufacturing centers.

The 6th amendment's guarantee of a speedy and public trial is aimed at a. deterring potential criminals by fear of swift and certain punishment. b. trying those accused of crimes without undue delay and avoiding secret trials. c. eliminating overcrowded dockets in the nation's criminal courts. d. preventing jurors from being unduly influenced by public opinion.