In my opinion i feel like failure is the greatest because you’ll learn from those mistakes you did
        
             
        
        
        
A.national security council
b.office of policy development
        
             
        
        
        
Answer: Any congressional action required executive approval. Most congressional decisions required the approval of at least nine states. Congress lacked the power to regulate foreign trade.
Explanation:
 
        
             
        
        
        
Some delegates were so afraid of tyranny and infringement upon people's rights they did not want a president.These would have been the democrat-republicans. The most famous democrat-repubican was Thomas Jefferson. James Monroe and eventually James Madison were democrat-republicans as well. 
        
             
        
        
        
I do not know the answer, but if I were to guess, that it would be the one about plantations.
Plantations were hotspots of manual labor, specifically slaves. And when slaves were outlawed the plantation owners lose there main source of “profit” (aka the need to not pay workers for manual labor and instead use that money to get more laborers) it seems like the logical answer to me.
Also using process of elimination we know that the war could have spilt the country in two. So the union was indeed saved.