Estado oligarquico By facebooker_3320178838003337 1879 x 1880 Roca 1886 Juarez Celman 1890 Pellegrini 1892 L. Sáenz Peña 1895 Uriburu 1898 Roca 1904 Quintana 1906 Figueroa Alcorta 1910 R.Sáenz Peña 1914 V. de la plaza 1916 Yrigoyen