during the 1820s, the united states and britain agreed by treaty to:
a. claim that the rio grande marked the southern border of texas.
b. trade with china.
c. patrol the mississippi.
d. share control of oregon county.

i think the answer would be a

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.