The immediate cause of World War I was Group of answer choices the German invasion of Poland. an uprising of Catholic peasants in Bavaria. the assassination of Austrian Archduke Francis Ferdinand in Sarajevo. the French occupation of the Ruhr.

the assassination of Austrian Archduke Francis Ferdinand in Sarajevo.

Explanation:

In simple words, The execution of Archduke Franz Ferdinand of Austria-Hungary was the direct source of World War I, which brought the aforesaid components into play (coalitions, colonialism, militarization, and patriotism). The Archduke was assassinated by the Black Hand, a Serbian nationalist terrorist organisation, in June 1914.

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).

it affected it because the kingdoms (with trade) slowly got richer and richer.