The “unstable equilibrium” referred to by Bismarck in the first paragraph is best explained by which of the following developments in European politics? a.)The effective withdrawal of Great Britain from engagement in conflicts on the European continent
b.)The creation of the Dual Monarchy recognizing Hungary’s status within the Austro-Hungarian Empire
c.)The unification of the German Empire under Prussian leadership
d.)The rise of new political parties favoring socialist policies and workers’ rights