Answer:
B. Europe's population declined, increasing competition between lords for laborers.
Explanation:
The Black Death ravaged the lands in Asia, and with the slow connection between Europe and Asia in an effort to obtain the valuable silk, they also brought amounts of plague later on through the routes. The Black Death, like all diseases, were described as a "disease that had no favors for any classes, and struck the rich and poor, the higher class and the lower alike". With the disappearance of these classes's populations, the feudalism system did not work, as it needed a large population. This soon lead to the end of the feudalism age, and the start of the dark ages.
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