Slavery and royal rivalries. In the following decades, the Kingdom of Kongo became a major source of slaves for Portuguese traders and other European powers. ... A common characteristic of political life in the kingdom of Kongo was fierce competition over succession to the throne.
The Kongo king played a primary role in the highly centralized political and social structures. He retained the right to appoint and remove officials, but his authority was checked by the council of elders and the traditional rights of clan chiefs. 
        
                    
             
        
        
        
Answer:
 The Dust Bowl intensified the hardship. 
 
 
        
             
        
        
        
Answer:A.
Explanation:The French and Indian War also had lasting (and devastating) effects for the Native American tribes of North America. The British took retribution against Native American nations that fought on the side of the French by cutting off their supplies and then forcibly compelling the tribes to obey the rules of the new mother country.
 
        
             
        
        
        
D.provide revenue for the government
        
             
        
        
        
east of the Arabian Peninsula