How did the Roman government contribute to the fall of Rome?

Rome's collapse

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.

the actual answers are a, b, and d.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.