Read the description and choose the correct option:
A major global conflict broke out in the early twentieth century, beginning in Europe and soon spreading to other parts of the world. Powerful nations formed rival alliances, and an assassination triggered widespread fighting. The war reshaped political boundaries and weakened old empires. Its immediate cause was ............... .
- (a)Formation of alliances
- (b)Annexation of Austria
- (c)Imperialism
- (d)Sarajevo Crisis
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Sarajevo Crisis
Reason — The description refers to the First World War. Nationalism, imperialism and the division of Europe into rival alliances were its long term causes. Its immediate cause was the Sarajevo Crisis — the assassination of Archduke Francis Ferdinand at Sarajevo on June 28, 1914 by the secret society 'Black Hand', after which Austria declared war on Serbia.