I would think it would be D. 
A is incorrect as slavery was just made illegal.
B is incorrect as the United States could not allowed African Americans to not abide by laws. 
C is incorrect as it encourage the slaves to assault the slave owners
        
             
        
        
        
The Impact<span> and </span>Effects of WW1<span> on America </span>were<span>envisioned in a famous quote by President Woodrow Wilson. ... </span>Effects of WW1<span> on America Fact </span>1<span>: The </span>impact<span> of the Great </span>War<span> on the United States saw political, economic and social changes. The United States emerged from the </span>war<span> as a </span>world<span> military and industrial leader</span>
        
             
        
        
        
I know the answer is either B or D
        
             
        
        
        
A political map focuses on boundaries between entities, like countries, states or counties. Thematic maps are data maps of a specific subject or for a specific purpose. Statistical thematic maps include a variety of different map types such as choropleth or shaded maps, dot maps, proportional symbol maps, and isarithmic maps.