write this post in different words:The Federal Reserve has altered its monetary policy multiple times in the last 20 years in response to economic difficulties. The employment of unorthodox monetary policy measures, including quantitative easing, which entails buying long-term securities to lower long-term interest rates, has been one notable shift. This was a reaction to the recession that followed the financial crisis of 2008, since the near-zero interest rates made standard monetary policy tools ineffective. Additionally, the Fed adopted forward guidance, which is announcing its plans for future policy in an effort to affect market conditions and expectations