How did shifting workforce demographics contribute to the dramatic changes that occurred in the us labor force and industry during and immediately after world war ii?

. i have to write an essay on this question and i don't understand. : (

Most of the people working before WW2 was males, with females doing all the house work, and told to "not get any outside jobs". However, during WW2, all the males were called to serve in the army, which left a lot of vacant space that needed to be filled. The women filled these positions, and took over producing war material. After WW2, some women returned to working at home, however many still wanted to work outside. This led to a shifting workforce of dominately males inside the workforce to more of a half-and-half.

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