In addition to the sources of silver mentioned in the first paragraph, the greatest volume of additional silver came to China from which of the following regions?

(A) Central Asia (B) Europe (C) The Middle East (D) The New WorldExplanation: New World silver powered the Chinese economy, as Spanish treasure galleons brought it over in massive quantities from Mexico, so (D) is correct. Eliminate (A) and (C), as Central Asia and the Middle East are not immediately recognizable as silver exporting regions. Choice (B) can be eliminated as well since the production of silver in Europe proper did not match that of the New World.