Europe, 01 May 305: Second Tetrarchy
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Political map of Europe & the Mediterranean on 01 May 305 (Diocletian and the Tetrarchy: Second Tetrarchy), showing the following events: Battle of Vindonissa; Great Persecution; Arsacid Albania; Afrighid Kingdom; Second Tetrarchy; Reign of Galerius.

R o m a n E m p i r e(Constantius & Galerius)

F i n n o - U g r i c P e o p l e s

Sasanian
Persian Empire(Hormizd II)

( Constantius )

( Maximinus Daza )

( Valerius Severus )

Pannoniae(R. dioc.)

Tervingi(R. client)

Kushano-
Sasanian
Kingdom

Britanniae(R. dioc.)

Hispaniae(R. dioc.)

Thraciae(R. dioc.)

Pontica(R. dioc.)

Africa(R. dioc.)

Viennensis(R. dioc.)

Galliae(R. dioc.)

Asiana(R. dioc.)

Oriens(R. dioc.)

Moesiae(R. dioc.)

Armenia(R. client)

Italia(R. dioc.)

Bosporan
Kingdom(R. client)

Quadi(R. client)

S a r m a t i a n s

Colchis(R. client)

Lakhmid K.(Per. vas.)

Baquates(R. client)

Tanukhid K.(R. client)

Wielbark
Culture

Iberia(R. client)

Albania(R. client)

Marco-
manni(R. client)

Alem-
anni(R. client)

Przeworsk
culture

Rhysaddir?(Hisp.)

Rutubis?(Hisp.)

Aug. Treverorum

302?Constantius defeats
Alemanni at Vindonissa

Feb 303–Apr 311Widespread persecution
of Christians under
Diocletian and Galerius

303?Albania becomes
Roman client state

305Afrighids gain control
in Khwarazm

1 May 305Diocletian and Maximian
resign in favor of
Constantius and Galerius

1 May 305–? May 311Galerius presides
over Roman Empire;
Tetrarchy breaks down

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