It would Be D  glad to help! ;)
        
             
        
        
        
It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. T<span>he tone of the section entitled "Billy Ansel" is best described as Frustrated and Determined. Hope this answers your question.</span>
        
             
        
        
        
Answer:
Southwest: Pueblo.
Mississippi River Valley: Mound Builders.
Explanation:
"Southwest Native Americans lived in Adobe homes. These houses had many levels in them and were made from clay and straw bricks. They were cemented together with adobe. Adobe homes housed one family, but the homes were connected together so many families lived next door to each other. These homes were good in warm dry climates for tribes that did not move around to hunt and gather."
"The Mississippian culture was a mound-building Native American civilization that flourished in what is now the Midwestern, Eastern, and Southeastern United States from approximately 800 CE to 1600 CE, varying regionally."
 
        
                    
             
        
        
        
The correct answer for this question is this one: "<span>headings." </span>Roman numerals indicate the general idea, then it breaks to capitalized letters, then integers, then lower case letters. Basically, Roman numerals can also mean the main idea of the whole topic.