Many scholars believe that the initial 1900s had only been an extension of the 19th century and that the First World War opened the next age. Many feel that it changed Europe and the entire world and started a long period of military conflicts, genocides, nationalism, and high-speed modernization. This course will offer the most important facts related to the Great War and discuss their consequences. The course will demonstrate that it is difficult to understand our contemporary world without basic knowledge of World War I, that we are all grandchildren of that war.