Based on the graph, which of the following statements is correct? A. In 1840 there were more miles of railroad track in the South than in
the North.
B. In 1850 the South more than tripled the miles of tracks it had in 1840.
C. In 1860 the amount of tracks in both the North and the South had
not increased.
D. In all three decades, the North had more miles of tracks than the South.

Which statement best describes a significant cause of world war ii? o a. the economic boom that followed world war i allowed countries to build up huge militaries. o b. the treaty of versailles, which ended world war i, left lasting resentments in many countries. o c. the rise of imperial states in asia caused european powers to unite for their common defense. o d. the league of nations encouraged european states to form secret military alliances.