Why was John Deere’s way of manufacturing more efficient than the previous method? (The Emerging West)

He was able to utilize interchangeable parts to make is plows more efficient. He started using iorn as his material for building plows. Since iron was heavier it was easier to dig into the soil.

South carolina was so angry about the election of lincoln that they seceded from the union on december 20, 1860. they attacked fort sumter later, on april 12, 1861.