Complex sentence: Benton McMillin, 87, former US Congressman (1879--99), Governor of Tennessee (1899--1903), US Ambassador to Peru (1913--19), and US Ambassador to Guatemala (1920--21).
Split into simpler sentences: Benton McMillin, 87, former U.S. Congressman (1879--99) and later Governor of Tennessee (1899--1903). He served later as the U.S. Ambassador to Peru (1913--19) and to Guatemala (1920--21).