Leaders--they with commissioners for NE created a treaty and therefore the sagamores are spokespersons or leaders of the tribes. 
Sagamores of the tribes were meeting with NE leadership to create a treaty. Only leadership would be recognized for the treaty process. The sagamores were either leaders of the tribes or acting as diplomats to complete the treaty process. 
        
             
        
        
        
A and C can work and D is partially true I would go with a or d tho
        
             
        
        
        
Majority of Southerners were opposed to Lincoln’s stance on slavery. 
They saw him as a threat to their livelihood and harbinger of secession.
        
                    
             
        
        
        
William the Conqueror was important because he established feudalism in Europe.
        
                    
             
        
        
        
The answer is b, gl on the test