Question

When did the First World War broke out?
A. 1941
B. 1911
C. 1914
D. 1918

Answer 1

Hint: The first World War was fought between the Central Powers- mainly Germany, Austro-Hungary Empire, and the Ottoman Empire against the Allies—mainly France, Great Britain, Russia, and the United States.

Complete answer: The assassination of Archduke Franz Ferdinand in Austria on 28th June 1914 was the main cause for the break of World War I. There was no single event that led to the outbreak of World War I. The following are the various causes:
-the new international expansionist policy of Germany
-mutual defence alliances like Triple Alliance(1882) and Triple Entente(1907)
-Imperial expansion
-Militarism by countries like Great Britain and Germany

The war development was on two fronts.
-Eastern front: Russians against Germans and Austro-Hungarians
-Western front: Germany against Britain, France and, after 1917, the USA

World War I was fought between 1914 and 1919. The war officially ended between Germany and the Allies with the signing of the Treaty of Versailles. It held Germany responsible for starting the war and imposed harsh penalties in terms of loss of territory, massive reparations payments and demilitarization.

Thus, option (C) is the correct answer.

Note: World War I was a land, air and sea conflict which was also known as "The Great War". It was also the first major war in which airplanes and tanks were used.