 In the 19th century, Moldavians from the territories of the medieval Principality of Moldavia, divided into Bessarabia, Bukovina, and Western Moldavia (after 1859, Romania), made a significant contribution to the formation of the modern Romanian culture.Among these were many Bessarabians, such as Alexandru Donici, Alexandru Hâjdeu, Bogdan Petriceicu Hasdeu, Constantin Stamati, Constantin Stamati-Ciurea, Costache Negruzzi, Alecu Russo, Constantin Stere.Mihai Eminescu, a late Romantic poet, and Ion Creangă, a writer, are the most influential Romanian language artists, considered national writers both in Romania and Moldova.