Respuesta :
"They resisted the influx of African Americans leaving the South" is the one among the following choices given in the question that was true of cities in the North during the 1920s. The correct option among all the options that are given in the question is the third option or the penultimate option. I hope it helped you.
I believe the answer is: They resisted the influx of African Americans leaving the South.
The cities in northern states were the first one to adopt industrial revolution which created many job opportunities in their area. This provide a lot of opportunities for African Americans who at that time were discriminated in the job field in the southern states.