Answer:
Methodology. Sociology, for Max Weber, is "a science which attempts the interpretive understanding of social action in order thereby to arrive at a causal explanation of its course and effects."
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The Prussian state power dominated the nation building process in Germany. The key role was played by Otto von Bismarck, its chief minister with the help of Prussian army.
There were three wars over 7 years with Denmark, Austria Hungary and France between 1864 and 1871 which ended in Prussian victory.
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It led to the start of world war 1. Archduke Ferdinand was from the Balkans which was known as the "powder keg" of Europe during this time period.