Mano Negra dictatorship of Francisco Franco. "The Black Hand" was also the name of a Serbian nationalist underground/terrorist network before and during the First World War (and which supposedly worked out of Masonic lodges). Their most notable members include Gavrilo Princip and the group of assassins who killed Archduke Franz Ferdinand, thus triggering the war in 1914. "La Mano Negra" is also a common expression in Spanish to say, ""Aquí hubo mano negra"" ("There was a black hand here") to say that someone with authority, in a particular event, manipulated things illegally for its benefit. The expression is also used sometimes as
World War I 1918 influenza pandemic, which caused between 50 and 100 million deaths worldwide. Military losses were exacerbated by new technological and industrial developments and the tactical stalemate caused by gruelling trench warfare. It was one of the deadliest conflicts in history and precipitated major political changes, including the Revolutions of 1917–1923, in many of the nations involved. Unresolved rivalries at the end of the conflict contributed to the start of World War II about twenty years later. On 28 June 1914, Gavrilo Princip, a Bosnian Serb Yugoslav nationalist, assassinated the Austro-Hungarian heir Archduke Franz Ferdinand in Sarajevo, leading to the July