During the middle ages most poor peasants remained poor their entire lives. Why do you think this was so? Explain your answer. (I need 5 or more sentences)

Peasants remained poor because they were subjects of their lord, who had an interest in keeping them poor. They did not have many, if any, opportunities for advancement. They could not be anything but farmers, really. Peasants were also often tied to the land they worked. However, they did not own this land