India, June 22 -- Alan Greenspan, one of the most influential economists in U.S. history, died on Monday at the age of 100. "Alan passed away at our home this morning at the age of 100 from complications of Parkinson's disease," stated his wife of 29 years, Andrea Mitchell, as per reported by NBC News.

Greenspan died from complications related to Parkinson's disease, Andrea Mitchell said in her statement. Parkinson's disease is a disorder of the nervous system that affects how a person moves.

The disease gets worse over time and symptoms usually develop slowly. The nervous system is a network of nerve cells that controls many functions of the body, including movement, as per Mayo Clinic. One of the first signs is often a small tremor, o...