11 nov 1860 ano - The Buisness Thrust

Descrição:

Between 1790 and 1860, the US Patent Office awarded
31,000 patents

Between 1860 and 1930, over 1.5 million patents are awarded

1865 saw 16,000 tons of steel produced and by 1930, 56
million tons were produced.

Railroads connected the west coast to the east coast.

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