The 1914 and 1939 Wars that engulfed almost the entire world were known as World Wars due to their unprecedented impact and dimension. In this context, answer the following:
Explain the immediate cause of the First World War.
Topic: Immediate cause of the First World War
Answer
The immediate cause was the SARAJEVO CRISIS.
On 28 JUNE 1914 Archduke Francis Ferdinand, heir to the throne of Austria-Hungary, and his wife were assassinated at Sarajevo, the capital of Bosnia, by GAVRILO PRINCIP. The murder was organised by a secret Serbian society, the BLACK HAND (Union of Death), whose aim was to unite all Serbians into a single state.
Austria held Serbia responsible and served a harsh ultimatum on 23 July 1914. Serbia accepted most of the demands but refused those that would have destroyed her sovereignty, and Austria declared war on 28 July 1914. Russia mobilised in support of Serbia, Germany declared war on Russia and France, and when Germany invaded Belgium, England entered the war — so a local quarrel became a world war within weeks.
Three marks: the assassination, the ultimatum, and the chain of declarations. Do not stop at the murder — the question asks how it caused a WORLD war, and the alliance chain supplies the third mark. The names and dates carry the answer: Francis Ferdinand, Gavrilo Princip, the Black Hand, 28 June 1914, the ultimatum of 23 July, war on 28 July. Always distinguish the IMMEDIATE cause (Sarajevo) from the underlying ones (nationalism, imperialism, the arms race, the alliance system).