How and where did the united states expand its role in the international scene?

The united states expand its role on the international scale by trying to pursue a more aggressive policy that it had of which they have the imperial presence in the marked out western hemisphere and as well as in Asia. Wilson had contributed to the expansion by growing the military presence and in addition, many believe that the duty of America as to become an empire that will spread to an order, moralism and as well as Christianity.