Answer:
In general, they were able to find out what his last meal was in his stomach, since he was so well preserved. In fact, he's the oldest and most well preserved mummy to be discovered. 
They also learned he was killed by a blow to the head, perhaps by an enemy tribesman. They also gained knowledge of his burial rituals and a clear view on everyday life during the prehistoric age.
They've also been able to extract blood from him, the oldest blood sample ever retrieved. It sheds new light on his death and may change the way police study blood found in modern crime scenes.
 
        
             
        
        
        
Some of the tensions that resulted in South Carolina’s rejection of federal authority during president Jackson’s administration include the readiness of President Jackson to use federal force in order to preserve the Union. Jackson also differed with his vice president Calhoun over the nullification issue which led Calhoun to resign 
 
        
             
        
        
        
NINBY stands for “Not in my back yard” and it represents a negative attitude of the people who opposed zoning and building developments for selfish reasons.