<span>The Aztec and Inca had large, united empires, but the Maya did not.</span>
First Lieutenant Jules Garesche Ord ordered the advance of the Buffalo Soldiers (black members of the 10th Cavalry Regiment).
Ord (a white officer) died in the attack. But the efforts of the Buffalo Soldiers and his leadership are credited with the success of the battle. One of Teddy Roosevelt's "Rough Riders" said of the Buffalo Soldiers and their dedication: "<span>I never saw braver men anywhere."</span>
Answer A makes the most sense because agriculture is the study of farming. so A would be my answer. Hope this helps :)