Siglo XX España By Igor Sáez Puerto Period: Jan 1, 1902 to Sep 13, 1923 Alfonso XIII Period: Sep 13, 1923 to Apr 14, 1930 Dictadura de Primo de Ribera Period: Apr 14, 1931 to Apr 1, 1939 Segunda República Period: Jul 17, 1936 to Apr 1, 1939 Guerra Civil Española Period: Apr 1, 1939 to Nov 20, 1975 Dictadura de Francisco Franco Period: Nov 20, 1975 to Jan 1, 1982 Transición Period: 1982 to 2021 Democracia