(A) ** 1914
(B) 1945
(C) 1939
(D) 1918
EXPLANATIONS BELOW
Concept note-1: -World War I began after the assassination of Austrian archduke Franz Ferdinand by South Slav nationalist Gavrilo Princip on June 28, 1914. Read more about why the Balkans became the “powder keg of Europe.”
Concept note-2: -The assassination of Austrian Archduke Franz Ferdinand (June 28, 1914) was the main catalyst for the start of the Great War (World War I).
Concept note-3: -First World War (World War I) is considered as one of the largest wars in history. The world’s great powers assembled in two opposing alliances: the Allies (British Empire, France and the Russian Empire) versus the Central Powers (Germany and Austria-Hungary). WWI lasted from 28 July 1914 to 11 November 1918.
Concept note-4: -World War I, also known as the Great War, began in 1914 after the assassination of Archduke Franz Ferdinand of Austria.