Which of these groups is most responsible for the Fall of Rome? A. Germanic tribes
B. Christians
C. the other Mediterranean D. civilizations
E. the Greeks

A. Germanic tribes

Explanation: 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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