Answer:
If graph goes upward, it means profit and if the graph comes downward it means loss.
Explanation:
If the graph goes in the upper direction so this means that maria is running a profitable business by selling taco and Maria’s total revenue exceeds her total profit. But if the graph comes down, it means that maria having losses in her business and Maria’s total profit exceeds her total revenue. This is because the tacos is not buying by the people in the neighborhood. 
 
        
                    
             
        
        
        
C.) It is a secret route that slaves took to escape from Southern slave states to the North. Even though Harriet Tubman started this, it wasn't to help slaves become free it was to help them escape so it's C
 
        
                    
             
        
        
        
Christopher Columbus sailed West from Spain and discovered the Americas.
        
             
        
        
        
It was advantageously located near the coast and other settlements.
 
        
                    
             
        
        
        
They wanted to exploit a loophole in american politics. Before them, the other Native people who ceded their lands had first been recognized as nations and then when the territory became their legally, they would give it away in deals with the American government. The Cherokee thus declared themselves to be a sovereign nation and not to give the land, which is why they took the case to the supreme court in order to be protected.