On the map of the Roman Empire we are here

In the early 1st century AD Roman rule was finally established in the Eastern Balkans. The present-day Bulgarian lands were included in the territorial and administrative division systems and government of the vast empire. They belonged mainly to the provinces of Moesia Inferior and Thracia till the end of the 3rd century AD. After the 3rd-4th century reforms the latter were replaced by several smaller provinces included in two higher-ranking territorial and administrative units: the dioceses of Thracia and Dacia. The annexation of the present -day Bulgarian lands by the Roman Empire secured their complete economic and cultural integration into the ancient Mediterranean world. They joined new forms of economic activity, as well as new material culture standards. After the establishment of the Roman rule, however, life did not become totally uniform with that of Italy and the rest of the provinces and territories of the Empire.