The answer is D. I hope this helped :)
        
             
        
        
        
Answer:
I actually do not know that
 
        
                    
             
        
        
        
Republic of Texas.
Texas was not a state yet and the Alamo had not occurred yet, and the borders were only created after the war was over
 
        
             
        
        
        
Answer: To abolish slavery.
Explanation: The 13th amendment to the United States Constitution provides that "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction."
 
        
                    
             
        
        
        
Answer:
The Russian word "tsar" is derived from the Latin title for the Roman emperors, caesar.