THE ADMINISTRATION OF THEODOSIVS I (A.D. 394-395)
The Roman Empire is unified for last time

PRAEFECTVRA GALLIAE

PRAEFECTVRA ILLYRICI

D. 1 - Diocesis Britanniarum

D. 7 - Diocesis Daciae

D. 2 - Diocesis Galliarum

D. 8 - Diocesis Macedoniae

D. 3 - Diocesis Hispaniarum

PRAEFECTVRA ITALIAE

PRAEFECTVRA ORIENTIS

D. 4 - Diocesis Italiae

D. 9 - Diocesis Thraciae

D. 5 - Diocesis Africae

D. 10 - Diocesis Asiana

D. 6 - Diocesis Illyrici

D. 11 - Diocesis Aegypti

D. 12 - Diocesis Pontica

D. 13 - Diocesis Orientis

The Administration of Theodosius I (394-395).

When Theodosius unified the Roman Empire in 394, one hundred years after Diocletianus devised the Tetrarchy system of government, the territorial division of the Empire continued being very similar. The four initial Prefectures continued existing and the division was now in 13 Dioceses and 111 Provinces, instead of the 12 Dioceses and 96 Provinces that Diocletianus initially designed.