Explanation: overseas expansionism is a perfect example of imperialism. Once Second German Empire was proclaimed (1870: Unification of German principalities under one monarch), its rulers tried to expand overseas. Period between 1870-1914 is a period during which German empire practiced imperialist foreign policy.
In general, the reality of the Great War differed from expectations at the beginning of the war in that everyone expected it to be over quickly and it lasted for four years.
