What was the strongest influence in the Decline of Rome?

I  believe Rome's major downfall was its fall of commerce and trade.

Explanation:

Because Rome's roads were not maintained and cared for (they had a lot of robbers and natural barriers) the trade began to decline. This must have played a major role in the decline of Rome.

debating and finalizing the detail of the policy

answer; the civil right act of 1964;