Alan Greenspan, one of the most influential economists and central bankers in modern history, has passed away at the age of 100. Greenspan served as Chairman of the US Federal Reserve from 1987 to 2006 and played a pivotal role in shaping America's economic and monetary policies for nearly two decades. He guided the US economy through major events including the 1987 stock market crash, the dot-com boom and bust, and the aftermath of the 911 attacks. While widely credited for supporting economic growth and controlling inflation, his legacy also remains debated due to criticism surrounding low interest rates and the 2008 financial crisis. Here's a look back at the life, achievements, controversies, and lasting impact of Alan Greenspan.