Two seas that formed part of the northern empire border were? A. Aral and Caspian sea
B. mediterranean and Arabian Sea
C. Black and red sea
D. Caspian in black seas

the answer is C: Black Sea and Red Sea

Explanation:

C : black and red sea

Explanation:

The borders of the Roman Empire, which fluctuated throughout the empire's history, were realised as a combination of military roads and linked forts, natural frontiers (most notably the Rhine and Danube rivers) and man-made fortifications which separated the lands of the empire from the countries beyond

congress was not thoroughly prohibiting states from funding religious schools.

the roman empire began to fall