Complex sentence: Louis-René Villermé (b. Paris, 10 March 1782; d. there, 16 Nov., 1863) was a French doctor who later in life became an economist who wrote about social issues.
Split into simpler sentences: Louis-René Villermé (b. Paris, 10 March 1782; d. there, 16 November, 1863) was a French doctor. Later in life, he became an economist who wrote about social issues.