Answer:
Militia maybe. A militia is a military force that is raised from the civil population to supplement a regular army in an emergency. It is made up of a group of volunteers.
Explanation:
The Incas built a large system of roads that went throughout their empire, Commoners were not allowed to travel on the roads. Communication was accomplished by runners on the roads.
Answer:
I just researched what HBCU is apparently all the universities you listed are supported by the HBCU, Since you have put 5 A's in your answer choice, I'm assuming it's the one you didn't mention. Please check again and let me know if these 4 state universities are the only one mentioned, or if you left one out by accident.
https://news.nationalgeographic.com/news/2003/01/how-slavery-helped-build-a-world-economy/