What seventeenth-century economic theory that held that the prosperity of a nation depended on a large supply of gold and silver *

what are local authorities doing to fix the problem

explanation:

the right answer is d

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.