Alan Greenspan, the former Federal Reserve chairman who served for 19 years under four US presidents, has died at the age of 100.

The influential economist passed away on Monday, marking the end of an era for one of the most recognizable figures in modern central banking history.

Greenspan is widely credited with mastering "Fedspeak," the carefully calibrated language used by central bankers to signal policy intentions without committing to specific actions.

His tenure, which spanned from 1987 to 2006, was characterized by a period of relative economic stability and low inflation, though it also ended with the financial crisis that followed his departure.

His death comes as the Federal Reserve navigates a period of significant internal transition.

Recent reports indicate that Federal Reserve Governor Stephen Miran has submitted his resignation, signaling support for Kevin Warsh as the incoming chair.