world war I led to an economic and industrial boom, as factory owners known as "merchants of death" mad billions off of supplying the allies war effort. it created a vibrant middle class in this country that would strengthen all the way through the 1920s. hope this helps you!
the allies helped with Germanys reconstruction effort and also limited their military while japan was not allowed to have a standing military and only a national defense, japan also received little reconstruction help compared to Germany
