The post war accord was what

(1) an unwritten treaty between labor and management which led to more civil discourse in dispute settlements?
(2) a written treaty between Churchill, Roosevelt, and Stalin which ushered in a new economic order.
(3) A new labor market policy which dictated that US workers would neve labor under the institution of slavery again?
(4) a profound shift in thinking which moved the economic policy of the US from free market capitalism to socialism?