The resources that made Kush a valuable trading partner were gold, copper, ebony, and ivory.
        
                    
             
        
        
        
The "Big Three" countries were the United States, Great Britain and Russia. They were called this because they were by far the most important allied players during the war, with Russia and Britain taking on most of the casualties. 
        
                    
             
        
        
        
This should be under a Science not history, but the answer is 
D. visual perception 
 
        
             
        
        
        
Their plan was called the Anaconda plan.
They wanted to blockade the Southern coast to prevent them from receiving resources from other countries. They also wanted to capture the Mississippi River to effectively cut the Confederacy in half (Battle of Vicksburg). The final step in their plan was to capture the Confederate capital city (Richmond).
        
             
        
        
        
Maror<span> — a bitter herb, symbolizing the bitterness and harshness of the slavery the Hebrews endured in Egypt. In Ashkenazi tradition, either </span>horseradish<span> or romaine</span>lettuce<span> may be eaten in the fulfillment of the mitzvah of eating bitter herbs during the Seder.</span>