The answer is Caste system (A)
In the primarily male centered work
force of the times, may segments of manufacturing and production were impacted with so many able bodied men being called to fight in the war. It was necessary for women to step into those roles to supplement these vacancies so the American wartime economy would survive.
Fact check me before making it your final answer but I'm 75% sure its 1
I believe that it was introduce after the french revolution