Answer:
The term is used in describing the amount of control or influence that consumers have on the market is sovereignty
Explanation:
 
        
             
        
        
        
It is marginal cost. <span>the marginal cost is the cost of making one more, and the marginal benefit is the price received from selling one more.</span>
        
                    
             
        
        
        
The correct timeline is 
B. Two 
1. European trading posts- slave trade 264 – 146 BC
2. Arab traders bring Islam to North Africa 711 CE
3. European colonies established by Berlin Conference. 1884 CE
4. Scramble for Africa 1884 CE
5. African nations gain independence. 1960 CE