china is your answer B)china hope this helps
 
        
                    
             
        
        
        
Explanation:
waterfalls are temporary features of rivers because stream erosion is greatest at waterfalls and rapids. The water that falls at the base of the waterfall erodes rock there, leaving the rock at the tops of the waterfalls to overhang. Overall, undermining causes waterfalls to recede farther upstream.
 
        
             
        
        
        
The Natives who were able to tame the Salt and Gila Rivers were known as the <u>Hohokam</u>. 
<h3>Who were the Hohokam?</h3>
- They were a Native American civilization that lived in the North American Southwest. 
- They constructed extensive irrigation works to use the waters of rivers. 
The Hohokam were in dry areas and yet needed water to grow crops and survive. They therefore constructed some complex and extensive canals to channel water to their settlements and farms. 
Find out more on the Hohokam at brainly.com/question/5798355.
 
        
             
        
        
        
B, E, F, G
I hope this helps :))