The question below consist of a set of labelled (P, Q, R, S) sentences. Out of four options given, select the most logical order of the sentences which form a paragraph.

World War I, also known as the Great War, began in 1914 after the assassination of Archduke Franz Ferdinand of Austria.

P. During the conflict, Germany, Austria-Hungary, Bulgaria and the Ottoman Empire (the Central Powers) fought against Great Britain, France, Russia, Italy, Romania, Japan and the United States (the Allied Powers).

Q. By the time the war was over and the Allied Powers claimed victory, more than 16 million people-soldiers and civilians alike-were dead.

R. His murder catapulted into a war across Europe that lasted until 1918.

S. Thanks to new military technologies and the horrors of trench warfare, World War I saw unprecedented levels of carnage and destruction.

World War I has also been referred to as “the first modern war.