The two governments, support each other in a federal system. The system is that in which the governmental power is divided between the central government and the territorial subdivisions. The federal government refers to the national government of the US.
Answer:
I don't know if this is the answer but I hope it helped
Explanation:
Invasions by Barbarian tribes
The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders.
