World War I, also known as the First World War, was a global conflict that took place from 1914 to 1918. It involved many of the world's great powers, with the majority of the fighting taking place in Europe. The war was triggered by the assassination of Archduke Franz Ferdinand of Austria-Hungary in 1914 and quickly escalated into a full-scale conflict. World War I was characterized by trench warfare, chemical weapons, and widespread destruction. It resulted in the deaths of millions of soldiers and civilians, making it one of the deadliest conflicts in history. The war also had a major impact on the political and social landscape of Europe, leading to the fall of several empires and the rise of new nations. Research on World War I often focuses on its causes, key events, and consequences. Scholars examine the political, economic, and social factors that led to the war, as well as the strategies and tactics employed by the various combatants. They also study the impact of the war on society, culture, and technology, and its role in shaping the modern world.