How did the rise of the merchant class foreshadow the end of feudalism?

А. People began to mistrust the monarchy and turn to one another for protection. Since the merchants no longer felt that they needed the nobles, the whole system fell apart.

B. As towns replaced kingdoms, international trade became common and an artisan class
began to emerge, which shifted the social organization.

c. Merchants started an uprising and demanded democracy. This led the people to revolt
and fight for their independence.

D. Merchants became more prosperous and could afford to become knights, so there were fewer people remaining in the peasant class.