I would have to say B is the best answer as I don't recall a worldwide economic depression taking place after world war II, or any of the other answers.
A Historian would look for a primary source (option d. ) - the definition of a primary source is that it was written at the time of the event, and not later (this is the secondary choice).
D. various notes of different state-chartered banks
manufactured goods
First popularized in Europe during the 1500s, mercantilism was based on the idea that a nation's wealth and power were best served by increasing exports, in an effort to collect precious metals like gold and silver. Mercantilism replaced the feudal economic system in Western Europe
