Dacia | Automobile Dacia | Roman Dacia | Via Traiana | Dacia Valent | Dacia Logan | Dacia, Brașov | ''Apula'' on the Roman Dacia |
In the 2nd century AD, after the Roman conquest, Ptolemy puts the eastern boundary of Dacia Traiana (the Roman province) as far east as the Hierasus (Siret) river, in modern Romania.
His six-volume Istoria românilor din Dacia-Traiană ("The History of the Romanians in Trajan's Dacia"), completed between 1888 and 1893, strongly asserts that the Romanians are of predominantly Roman origin - a position further elaborated by the historian Nicolae Iorga, one of Xenopol's numerous pupils (see Origin of the Romanians).
Colonization and the presence of military units gave rise to the emergence of most towns in "Dacia Traiana": for instance, Ulpia Traiana Sarmizegetusa was founded for veterans, Apulum and Potaissa started to develop as canabae.