Age. Must be between 18 to 30
<span>Federalism is the most important.
</span><span>I could be wrong but I gave it my best shot.
Hope this helps!!</span>
Answer:
south can i have brainlist?
Explanation:
The Civil War is the first war in which railroads were a major factor. The 1850s had seen enormous growth in the railroad industry so that by 1861, 22,000 miles of track had been laid in the Northern states and 9,500 miles in the South.
