Cuza's successor, a German prince, Karl of Hohenzollern-Sigmaringen (or Carol I), was elected in May. The parliament adopted the first constitution of Romania in the same year. The Great Powers acknowledged Romania's full independence at the Congress of Berlin and Carol I was crowned king in 1881. The Congress also granted the Danube Delta and Dobruja to Romania. Although Romanian scholars strove for the unification of all Romanians into a Greater Romania, the government did not openly support their irredentist projects.