La formation des États médiévaux roumains

Transylvania, the western region of Romania, was established in two steps :

 from the 9th Century to the second half of the 11th Century : the appearance of political structures organised into "voivodates" and occupation of territories by the
 Hungarian Kingdom. The second half of the 11th Century till the 13th Century brought territorial administrative structures ruled by the Hungarian King.

The Valachian region in the south of Romania was established in three steps :

 existing political structures (knezates and voivodates) tried to unite and form a State but the move failed due to unfavourable conditions in 1277.
 unification of political structures was achieved under the reign of Prince Basarab I (1310-1352).
 fortification of the State already formed by internal institutions, and external affirmation as a strong and well organised State in 1400.

Moldavia, the western region of Romania, was established in three steps :

 the appearance of the Marche in 1353, the organising structure under voivode Dragos who ruled over long-established local popular structures.
 rebellion of the Romanians in Maramuras, a region in the north of Transylvania, led by Voivode Bogdan who, in 1359, left the region with his army to conquer the Moldavian territories (1539).
 at the end of the 14th century, territories were organised and strengthened by political structures in Moldavia.

Dobrogea, a region lying on the coast of the Black Sea :

 in 1346, there already existed a State ruled by the local voivode Balica.
 in 1388, Mircea cel Batrân, Mircea the Elder, the Romanian voivode who ruled in Wallachia annexed the Dobrogean territory to his own.