During which period in history were the largest number of nations using the gold standard as their payments system?

Why did the Fed shift its policy target towards the federal funds rate

What will be an ideal response?

New smartphone applications are developed to help consumers find the cheapest prices in the neighborhood. As a result,

A) firms get greater market power. B) consumers' search costs are greatly lowered. C) firms are able to charge higher prices. D) only smart markets become more competitive.