"Monstrous coalition" (Romanian: Monstruoasa coaliție) is the name that has remained in the collective consciousness of Romania to refer to the alliance between conservatives and radical liberals in order to obtain Alexandru Ioan Cuza's removal from power in 1866.
Moreover, the ruler understood to govern over political groups with trustworthy people, of moderate shades, as Mihail Kogălniceanu or Nicolae Crețulescu.
Cuza was forced to swear that he would abdicate, after seven years of rule, and leave the throne to a foreign prince, as required in one of the provisions of the ad-hoc divans of 1857.
[3] The unionist press related that the argument of this heinous act was the charge that the elected ruler would have betrayed the interests of the country to a foreign power.
[4] Two days later, on 13 February, Cuza left Bucharest, taking the road to Vienna, and, after him, on 10 May 1866, Prince Karl of Hohenzollern-Sigmaringen was proclaimed ruler of Romania, under the name of Carol I.