What is one consequence of the defeat of the Huns at the Catalaunian Plains?

The defeat of the Huns at the Catalaunian Plains in 451 AD significantly weakened Attila's power and military strength, which aligns with the choice that it caused the fall of Attila. This battle was a major turning point, as it marked the first time the Huns faced a significant coalition of Roman and barbarian forces. The defeat diminished Attila's reputation and effectiveness as a military leader, contributing to a decline in his influence and control over his empire. Following this battle, Attila faced internal challenges and ultimately died a few years later, leading to a fragmentation of his empire and the decline of Hunnic power in Europe.

The other options discuss different events surrounding the time period, but they do not specifically relate to the direct impact of the Huns' defeat at the Catalaunian Plains on Attila's leadership and eventual downfall. For instance, the sacking of Rome occurred later and was not a direct consequence of this specific battle. Similarly, while there were shifts in power dynamics that may have supported the rise of the Visigoths and the unification of tribes, these events were not the most immediate or direct consequence of the defeat of the Huns. Therefore, the choice that relates directly to the