Austria-Hungary declared war on Serbia. Explain how this led to the conflict becoming the Great War.​

When Austria-Hungary declared war on Serbia, it led to Russia declaring war on Austria-Hungary as well because Russia was in an alliance with Serbia.

Germany which had an alliance with Austria-Hungary via the Triple Alliance then declared war on Russia.

Russia was already in an alliance with Great Britain and France known as the Triple Entente and when Germany declared war on Russia, Great Britain and France declared war on Germany.

Thus began the Great War.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

cruel, heartless

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