The main purpose of General Sherman's
"March to the Sea" in 1864 was to?

The purpose of Sherman's March to the Sea was to frighten Georgia's civilian population into abandoning the Confederate cause.

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.