Economies and resources within their own countries
Answer:
After the Union established an effective naval blockade, the Confederacy was cut off from trade with Europe. North had superior navy.
Along with the diminishing supply of metals used for currency, Chines scholars developed the new economic idea that held paper money as a means of payment and exchange, not as a value in itself. The issuing of paper currency in Song China was as much of a process as the invention of paper currency itself.
D. In productivity, which is based on the goods each country produces
Is most similar to the Preamble to the U.S. Constitution. The answer is C.
