The document provides background information on World War 1, including its differing viewpoints, causes, key players and events that led to its start in 1914. The main causes that contributed to the outbreak of the war were militarism and arms buildup among the great powers, the system of opposing alliances that divided Europe, imperial rivalries, and rising nationalism. The assassination of Archduke Franz Ferdinand provided the spark that set off a chain of events leading countries to declare war on each other due to their alliance obligations. This began the "Great War", which quickly escalated into a global conflict through the mobilization of millions of troops and the opening of battlefronts across Europe, Africa and Asia.