the answer is D, It increased production efficiency of a US cash crop that was in high demand in other nations.
<span>The obligations of serfs were to work for lords and knights. Serfs lives were much more difficult than that of a lord or knight. Serfs didn't have freedoms like the lords and knights. Knights would sometimes serve the lord as well but could also be the lord of a castle. Serfs didn't have that option.</span>
I’m assuming C but I’m not sure
Answer:
I would answer with option "D".
Explanation:
Option D is stating that <em>all </em>men are created equal, the other options aren't referring to that topic.