When did feudilism begin?

a) before the viking, magyar, and muslim invasions.
b) during the period of viking, magyar, and muslim invasions.
c) shortly after the period of viking, magyar, and muslim invasions.
d) long after the period of viking, magyar, and muslim invasions.

Me! these questions are based on american people in the south essential questions: question 1: for what reasons will one group of people exploit another?focus questions: question 1: what influenced the development of the south more: geography, economy, or slavery?question 2: what were the economic, political and social arguments for and againsts slavery in the first half of the 19th century.