Why was the assassination of Archduke Franz Ferdinand an important cause in World War I

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The murder of Archduke Franz Ferdinand outraged Austria-Hungary. ... Austria-Hungary was furious and, with Germany's support, declared war on Serbia on July 28.

Here I guess, have a nice day bud, BYE :D

Serbian hatred of Austria resulted in the formation of many secret anti-Austrian societies in Serbia. On June 28, 1914, a member of a Serbian secret party shot and killed Archduke Francis Ferdinand, heir to the Austrian throne, along with his wife. Infuriated by the action, Austria determined to punish the Serbs. Within just a few weeks, the countries of Europe were preparing for war, even though no one believed that war would come. Leaders of most nations still made their travels, visited one another, and planned for state visits to each other's countries.

ghana achieved independence peacefully, while algeria gained independence through an armed struggle.