 This was the moment when the call for union of the two Principalities began to be voiced with confidence, and the two monarchs showed more or less approval for the designs of the unionist "Partida Națională" (created by 1848 revolutionaries who had returned from exile).The war ended with the Treaty of Paris (March 30, 1856), which placed the countries, still as Ottoman vassals, under the protectorate of all European Powers (the United Kingdom, the French Empire, the Kingdom of Piedmont-Sardinia, Prussia, Austria, and, never again completely, Russia).The protector states had to decide on a compromise formula for the projected union; the Ottomans demanded and obtained, in contradiction with the "Regulament", the removal of both "hospodars" from their thrones, pending elections for the ad hoc Divans.