Benjamin Franklin created the Albany Plan of Union but faile because the 13 Colonies each had their own ideas and agendas.
NATO was formed in 1949 as a military defense among some of the countries of the free (non-communist) world. Today, it guarantees military assistance to any country that is a part of NATO in case of an international attack on the scale of a war. So, it would probably be good for the US to stay involved in NATO, even just as a precaution in case of an attack from another country, and also to help other countries if they are attacked. Hope this helps!
Shakyamuni lowers a spider's rope from Paradise to Hell for a criminal named Kandata, whose one good deed in life was to save a spider in a jungle.