Which of the following statements best summarizes the system of railroads shown on the map?

(1 point)
• The primary direction of the railroads built between 1850 and 1860 was north to south.
• The extent of the railroads in the South was very limited compared to that of the North.
©. The majority of the railroads that connected the North to the South were built by 1850
© The railroads established by 1860 each began and ended at a major American city or port.

The majority of the railroads that connected the North to the South were built by 1850.