Answer:
C.NASA
Explanation:
Katherine Johnson works at the Langley Research Center in Hampton, Virginia in 1961, alongside her colleagues Mary Jackson and Dorothy Vaughan. All of them are African-American women; the unit is segregated by race and sex.
 
        
             
        
        
        
Answer:
Finished the Grand Canal, between the Yellow and Yangtze River, it connected Northern and Southern China
Explanation:
 
        
             
        
        
        
In Article II, Section 3 of the Constitution, it states that the president has the power to call a Special Session. The reason why he rarely has to call a Special Session is because of the changes made by the 20th Amendment. Prior to the ratification of the 20th Amendment, Congress convened in December and typically adjourned in March. But after the ratification, Congress convenes on January 3 and typically does not adjourn until late in the year. So, the president rarely has to call Congress into session because Congress isn't generally out of session long.
        
             
        
        
        
They actually tried to avoid him being elected entirely. Through almost every ballot box in the southern states, his name wasn’t even on the ballot for voting.