They both have multiple different ethnic groups and cultures within the union.
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.
Answer:
It make their work difficult
Explanation:
it make the government lose more money
Answer:
It separates the island country from India.
The answer is definitely d.The founding fathers wanted to allow government to change with the times. The other answers also don't make sense. hope i helped!