The document discusses the causes and events of World War 1 from 1914-1919. Key factors that led to the war included militarism, imperialism, nationalism, and a system of overlapping alliances that drew the major European powers into war. The war was enabled by new military technologies but largely consisted of brutal trench warfare. It drew in countries from around the world and resulted in over 9 million deaths before an armistice in 1918.