20th century 20th century The 20th (twentieth) century was a century that began on January 1, 1901 and ended on December 31, 2000. It was the tenth and final century of the 2nd millennium. It is distinct from the century known as the 1900s which began on January 1, 1900 and ended on December 31, 1999. The 20th century was dominated by a chain of events that heralded significant changes in world history as to redefine the era: flu pandemic, World War I and World War II, nuclear power and space exploration, nationalism and decolonization, the Cold War and post-Cold War conflicts;
Galicia in the 20th century described by Méndez Ferrín) and the Galician Socialist Party (PSG, with X.M.Beiras and García Bodaño) was formed. Galicia in the 20th century The period of Solidaridad Gallega ("Galician Solidarity"), the beginning of the modern Galician nationalist movement, began in 1907 and ended around the First World War. Its unsuccessful aim was to create a unified electoral coalition to eliminate caciquism and obtain Galician representation in the Cortes Generales, the parliament of Spain. The first stage of 20th-century Galician history lasted until the dictatorship of Primo de Rivera. In this stage the Galician nationalist Irmandades da Fala ("Brothehoods of the Language")