What is believed to be the main cause of the bantu migrations that contributed to growth in south africa?

They needed more land for a growing population.

Explanation:

The Bantu were an African group of people who spoke various dialects of the Bantu language. These people originally came from the area around the Niger River in southern West Africa. From this region, they expanded throughout central, eastern and southern Africa. They took their traditional practices, language and technology with them, influencing the whole continent. However, the precise dynamics of the migration, as well as the specific reasons for it are not well-known.

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.

probally   a few days after there called