One of Charlemagne's most important achievements was: A. stopping the spread of the black death in Europe
B. giving peasants more rights under the feudal system
C. reducing power in the catholic church
D. uniting much of Europe into a single empire

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.

a. by accepting the election of president abraham lincoln in 1860 and convincing other southern states to do the same