摘要
Research question includes affect of monetary policy on product＇s demand. Monetary policy may increase demands in markets for firm＇s products. Assumption of study is that markets need money for demand. It is figured as market theory. Research topic explores theory of market and world money concept. It aims to use world money in market theory. This study adopts case exploration of Keynes, Friedman, and Fisher. This study is based on their figures. This study defends that world money is applied in global economy by quantity of global GDP. It is 60 trillion dollars, and 10% of that amount may become world money. Result of this study is that world money concept is applied through Fisher＇s quantity theory in world economy. Major conclusion is that markets need money to increase demand, aligned with market theory, and world money supplies money for markets.
