The statement that most accurately evaluates the impact of feudalism after the fall of Western Rome is:
• Feudalism was an effective protective measure against Germanic tribes.
Feudalism arose in response to the instability and invasions that followed the collapse of the Western Roman Empire, including threats from Germanic tribes. It established a system of local governance and protection through mutual obligations, which helped to provide security in a fragmented and dangerous environment. The other statements do not accurately reflect the historical context or reasons for the development of feudalism.