Over the time periods studied, it seems monetary policy does matter to the stock market. However, as stated, an investment strategy tied to monetary policy does not necessarily work for every easing or tightening cycle. There are caveats. Investors should consider many other factors too, such as yield curve, before making their investment decisions.

In the U.S., the Federal Reserve Act of 1913 gave the Federal Reserve responsibility for setting monetary policy. The Act was amended in 1977 to include the following two goals:

Promote maximum sustainable output and employment

Stabilize prices

Because the U.S. is the biggest and safest economy.

The USA is more influential on the stock exchanges for the reason of getting more money and settle in good life style. The business has been extended means the share market income is very useful and needed. The share some time give more income and some time give more loss.

Hi have you not learnt it is not the USA itself but it's traders which influence what happens on the stock markets. all using the system to get rich.