Which reason for the collapse of the roman empire do you think had the biggest impact? explain your reasoning

1. 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.

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answer is a meeting of congress.

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b.

jim crow laws were enacted in northern states.