The "d. United Nations" would not be a good example of an NGO, since NGOs (non-governmental organizations) usually act independently and on a much smaller scale. 
        
             
        
        
        
The Lend-Lease Act provided weapons and such to the Allies during World War ll. The United States gave money to Allied countries to buy weapons from the United States.
        
             
        
        
        
Adding onto SPARTANMAFIA’s answer they believed in manifest destiny where they thought they should have all of North America and that’s the way it should be
        
             
        
        
        
Archeaa. Hope This Helps!