The Spanish Government need to find a foreign noble to be the Spanish King. They chose a Germen, Leopold of Hohenzolen a relative of the Prussian King but Leopold is not keen but Bismarck is and grinds down the opposition of Leopold and the Prussian King. However such was hostile international opposition, Leopold has to withdraw. The French Government humilate Prussia further but Bismarck sends an insulting telegram which makes the French Government to make the foolish decision to declare war on Prussia.