Alan Greenspan, former US Federal Reserve chief, has passed away at 100. He steered the American economy through significant events like the 1987 stock market crash and the dot-com bust. While lauded for his steady leadership during economic expansions, he faced criticism for not curbing market excesses before the 2008 financial crisis. Greenspan's tenure saw him serve under four presidents, earning him accolades as a remarkable central banker.

A market maestro to some, he was criticized by others—including himself—for having too much faith in self-regulating markets.

The influential economist died Monday from complications of Parkinson’s disease, said his wife of 29 years, NBC News correspondent Andrea Mitchell.

Alan Greenspan, who served on the Federal Reserve under four presidents, died Monday at the age of 100.

Alan Greenspan, the influential economist who led the US Federal Reserve for almost 19 years and helped steer the world's largest economy through periods of growth and crisis, has…