Because they were trying to revise the articles of confederation. And people like Alexander Hamilton despised the articles of confederation.
The size and enthusiasm of the American forces bolstered the French and British.
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be that the North had better industrial capabilities, which allowed them to produce more war materials. </span></span>
The containment was successful in the Cold War when we were preventing Communism from spreading through Europe and Asia and also in the isolationism in the United States that limited its involvement in world affairs
Hope this helped