Alan Greenspan, the influential economist and former chair of the US Federal Reserve, has died at the age of 100 due to complications from Parkinson's disease, as confirmed by his wife, Andrea Mitchell.

Context

Greenspan served as the head of the Federal Reserve for nearly two decades, influencing US monetary policy under four different presidents.S1S3

Key points

• Greenspan was chair of the Federal Reserve from 1987 to 2006.S3

• He served under presidents Ronald Reagan, George H.W. Bush, Bill Clinton, and George W. Bush.S1

• His policies are credited with shaping the modern American economy.S2

• Greenspan's tenure is noted for its length and influence on monetary policy.S3

• Critics have argued that his policies contributed to the Global Financial Crisis of 2008.S3

• He was known for his advocacy of deregulation in financial markets.S2

• Greenspan's death marks the end of an era in US economic policy.S1

• His wife, Andrea Mitchell, is a correspondent for NBC News.S1

Why it matters

• Greenspan's policies have had a lasting impact on the US economy and financial systems.S2

• His leadership style and decisions continue to be studied and debated by economists and policymakers.S3

What to watch

• Reactions from current economic leaders regarding Greenspan's legacy.S2

• Analysis of how Greenspan's policies are viewed in light of recent economic challenges.S3