Kush became a wealthy kingdom because its expansive trading network, and because w<span>omen played a key role within the governance of the kingdom, which was unheard of in the ancient world.</span>
<span>This is a serf, more commonly known as a knight. Unlike the regular agricultural workers, they didn't have to work in the fields and make produce. They did however have to defend the feudal lord and the people from other feudal lords and their armies. Feudal lords waged wars often so they were na important class in the system and there was a lot of them.</span>
I believe the answer is A: Roman Emperors Through History because it was printed in 1721, the only book on the list not published after 1800.
Hope this helps!
I think its A not sure though