Answer:
B.  to keep their chief god strong
Explanation:
The Aztec believed that they owed everything to the gods who created themselves as well as the world around them. The would perform sacrifices in order for a good crop yield or good weather among other things. They believed that the best way to repay them was to offer up blood to them in regular rituals.
 
        
             
        
        
        
I think the answer is <span>Freedom rides to Washington, D.C. it was a challenge to segregation with buses. This was usually spearheaded by the CORE, Congress of Racial Equality. Its protests are brought by ordinances on social segregation based on color. This is widely done in schools, public transportation and social areas. </span><span />
        
             
        
        
        
This is known as the printing press they put ink on words and pressed it onto paper this was way faster then writing whole books by hand