Why did sob specialization emerge in attes as dvilizations developed?

At the time of hitler's 1939 invasion of poland, the us had a policy of appeasement negotiation opposition neutrality

What domestic issues did england and france have?

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.