Answer:
I really don't know im not sorry but I'm going to try and make it work 
 
        
             
        
        
        
<em>"Historically, it has been proven that the wright brothers spent all their money on building and testing their airplane. Although it was a genius idea, their attempt wasn't very successful. The Wright Brothers then lost all their wealth, and could not afford to buy paint..."</em>
Quoted from "Hogwash History"
 
        
             
        
        
        
In cross sectional research, a researcher compares multiple segments of the population at the same time.
<h3>What is cross sectional research?</h3>
It is a type of research design in which data are collected from many different individuals or segments. 
This data are analyzed at one specific point and time. 
Therefore, a cross sectional researcher compares multiple segments of the population at the same time.
For more information on cross sectional research kindly check 
brainly.com/question/10879218
 
        
             
        
        
        
Answer:
D
Explanation:
Davis rejected the insistence of Northern politicians that the compact made through the Constitution protected slavery.
 
        
                    
             
        
        
        
C you always government makes you pay taxes and you always follow the law