(A) ** The Great War
(B) The Amazing War
(C) The War Against the World
(D) The War that Started All Wars
EXPLANATIONS BELOW
Concept note-1: -World War I, also called First World War or Great War, an international conflict that in 1914–18 embroiled most of the nations of Europe along with Russia, the United States, the Middle East, and other regions.
Concept note-2: -World War I, also known as the Great War, began in 1914 after the assassination of Archduke Franz Ferdinand of Austria. His murder catapulted into a war across Europe that lasted until 1918.
Concept note-3: -Other names for World War 1 include ‘The War to End All Wars’, The War of the Nations, WW1 and ‘The Great War’.