Railroad construction accelerated dramatically during the war

Massive government spending

By 1860, 90 percent of the nation's manufacturing output came from northern states.

The North produced 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the South.  

The Burden Water Works and the 1893 World's Columbian Exposition

The Burden Iron Works was an iron works and industrial complex on the Hudson River and Wynantskill Creek in Troy, New York. It once housed the Burden Water Wheel, the most powerful vertical water wheel in history. It most likely inspired George Washington Ferris to build the Ferris wheel.  The iron works site was listed on the National Register of Historic Places as an archaeological site in 1977. The Burden Iron works Office Building was previously listed in 1972