Historically, after the organization provided by the Romans for the regio of Tuscia Etruria, and the Late Mediae val rise of a Longobard duchy later a Frankish ‘march’ of Tuscia, the leadership assumed by Florence in the process of transformation from a Commune to a regional State in the 14th and 15th cent, in spite of considerable resistance from Siena and Lucca, and the establishment of the Grand Duchy under the houses of Medici and Lorraine, impressed an indelible stamp upon the region. Finally, Tuscan speech, in All its many varieties, has from the 13th cent, onwards, and in particular during the 19th cent., asserted it-self as the literary language of United Italy, while even for this very reason confirming its originai character as a regional tongue.