What was the main benefit of scientific management?

The persian empire finally fell to the armies of

What was the result on the u.s. economy because of the major changes in atlantic shipping prior to and during the war of 1812?

How would high tariffs hurt america? a. fewer immigrants would be able to move to america b. sales of american products to other countries would go down c. americans would sell more goods to other countries d. goods imported from other countries would cost less