WORLD HISTORY

Detailed explanation-1: -Franz Ferdinand’s assassination led to the July Crisis and precipitated Austria-Hungary’s declaration of war against Serbia, which in turn triggered a series of events that eventually led – four weeks after his death – to Austria-Hungary’s allies and Serbia’s allies declaring war on each other, starting World War I.

Detailed explanation-2: -Although the assassination of Archduke Ferdinand was the spark that caused Austria-Hungary to strike the first blow, all the European powers quickly fell in line to defend their alliances, preserve or expand their empires and display their military might and patriotism.

Detailed explanation-3: -The assassination of Austrian Archduke Franz Ferdinand (June 28, 1914) was the main catalyst for the start of the Great War (World War I).