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The assassination of Austrian Archduke Franz Ferdinand (June 28, 1914) was the main catalyst for the start of the Great War (World War I). After the assassination, the following series of events took place: • July 28 - Austria declared war on Serbia.

Explanation:

d.

the northwest territory became the most densely populated area in the u.s.

during the pueblo revolt, father de mora hid most of the gold in the mine and covered the entrance. he tried to take some of the gold with him, but had to leave it behind in order to escape.