Answer: 1) Nobles became responsible for the protection of their own vassals.
2) The manor became an agricultural estate operated by a lord & worked by peasants who grew the economy and worked the land
3) The peasants were held to the manors and unable to leave
Explanation:
I have chose primary source to be the answer. Check out the definition of "primary source." secondary wouldn't make sense here.
All men are created equal and are endowed by their creator with certain unalienable rights, that among these are, life, liberty and the pursuit of happiness!
A belief to live in harmony with nature