Answer:
borporus
Explanation:
The borporus is a natural strait. It was a navigable route that connected the Black Sea to the Marmara Sea and established a path that connected Asia and Europe, representing a very favorable "commercial route" for those who controlled it. Constantinople was in control of this body of water due to its location. This gave Constantinople many advantages and profits.
It reflected in the structure of the federal government by making it balance which means that each arm of government is not powerful than others.
Answer:
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.