Complex sentence: Antonio Guzmán Blanco (1829--1899) was President of Venezuela (1870-1877,1879-1884, y 1886-1888), and an influential figure in that country from 1870 to 1888.
Split into simpler sentences: Antonio Guzmán Blanco (1829--1899) was President of Venezuela (1870-1877,1879-1884, and 1886-1888). He was an influential figure in that country from 1870 to 1888.