Why was the Double V campaign necessary?

The Double V campaign was a slogan and drive to promote the fight for democracy in overseas campaigns and at the home front in the United States for African Americans during World War II.

Explanation:

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom

the safahids used force when persuasion to convert from being a sunni muslim to embrace shi'ism was not effective. they also persecute shi'ites who have different views from their imposed teachings.