Germany and italy became unified under a policy of realpolitik, a german expression that means that the goals of the government policy should be accomplished by?
following public opinion
the calculated use of power
adherence to international law
remaining true to ideals

the calculated use of power

The union of both Germany and Italy was made possible under a policy named "Realpolitik". Realpolitik is a German expression which refers to the way in which the goals of government policy must be achieved. According to Realpolitik that is based on calculated use of power. 

John Brown, a citizen whose interests clearly go against the common goals of this country, tried to illegitimately take control of the Army's arsenal today. His methods are far from what a citizen who loves this country will do, hiring mercenaries and bringing them here in order to force his ideas, which, as I already mentioned, do not go along with the goals of this country. Luckily, he was struck down by the Army, which acted promptly in impeding he achieved his goal.