At the turn of the 20th century, what changed about the American mindset
toward expansionism?

wealthy plebeians became part of the roman nobility. however, despite changes in the laws, the patricians always held a majority of the wealth and power in ancient rome. a third social class in roman society was the slaves. around one third of the people living in rome were slaves.

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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.

the answer to your question is a because laws act as guidelines as to what is accepted in society. without it there would be conflicts between social groups and communities. it serves as a norm of conduct for citizens.