I believe the answer is 3. it spelled the end of many economic opportunities for both groups
During the world war I, many people were obligated into millitary draft and went to the war. When this happen, factories and other busineses in home soil experienced a lack of workers, so many women and african americans had the opportunity to try and operate factories and busineses in the home soils.
When the world war I ended, the men took back the control of the factories and busineses