The economy after WW2 crashed because of all the currency lost in the war.
Technological advancements were made to many explosive's and guns, to prepare for if a war like such may happen again
Manufacturing increased because of the resources being lower than dirt, and steel production went sky high,because of things like barbed wire and bullets using steel.
Problems with race were coming to an end, as people of all colors had helped with the war and gained respect.
woman's rights had fully began (even though they don't get fair wages still)