Answer:
Permanent settlements led to population increases. As populations grew, societies became more complex, as well as some social institutions that are older than civilization, but that fully developed in early civilizations: division of labor, social hierarchy, and even slavery.
In other words, as early civilizations became more complex, the relative egalitarianism of nomadic and semi nomadic societes disappeared. 
 
        
                    
             
        
        
        
Answer:
This is a primary source, namely a written one, because it derives directly from the past and its content hasn't been alternated.
Explanation:
Historians are dividing sources into primary and secondary. Primary sources are derived directly from the past, meaning that they are created at the time when some event happened. This is an example of primary source, as it is an original letter that one ruler sent to another one.
 
        
             
        
        
        
Built (1811–37) from Cumberland, Md<span>. (western terminus of a state road from </span>Baltimore<span> and of the Chesapeake and Ohio Canal), to </span>Vandalia<span>, Ill., it forms part of the present U.S. Route 40.</span>
        
                    
             
        
        
        
The role of John Ross in the the Antebellum South was that, he was the Principal Chief of the Cherokee Nations from 1828-1866, serving longer in this position than any other person. 
Hope this helps!
-Payshence xoxo
        
             
        
        
        
Answer: It could be all but OC
Explanation: You can see in the way that they word the answers how this would be the answer. Human effort is a part of the creation of products, you need resources to even start production, and nature could effect production.