Answer:
The First World War was a conflict that took place between 1914 and 1918, mainly in Western Europe, pitting the Allies (made up of France, Great Britain, Russia, Italy and the USA) against the Triple Entente (led by Germany, Austria-Hungary. and the Ottoman Empire). The war began after the murder in Serbia of the prince of Austria-Hungary, after which the latter country attacked Serbia, which was an ally of Russia. Thus, a whole series of military alliances were deployed that gave rise to the, until that moment, the largest and deadliest war in history.