In both German and Italian unification there was on leading state.
I'm not 100% sure this is the answer but I know they were successful in math.
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<span>At the beginning of World War I, Russia’s armies performed poorly. In response, Nicholas II appointed himself commander-in-chief, so he could take direct control of the military from Grand Duke Nicholas, against the advice of his ministers. Nicholas II spent much of late 1915 through August 1917 away from Tsarskoe Selo in Saint Petersburg.</span>