How did america become a unified nation with an identity based on the radical idea that “all men are created equal,” and how well did it live up to that ideal in the minds of americans of differing race and gender? PLEASE HELP!

How did the war of 1812 contribute to an increase in u.s. manufacturing? a) the war provided more resources for factories to increase production. b) the war promoted trade between countries so that americans could focus on fighting. c) the war cut americans off from their previous supply of imported manufactured goods. d) the war limited transportation in america, making it necessary to import manufactured goods.