How does the explanation of the origin of the term “alter ego” explain its later use in popular culture and literature?

The meaning of the term is "other I"  in latin an refers to a second part or identity that is contrary to the one that is commonly known.

Explanation:

The phrase "alter ego" comes from latin and means "other I".  It was used in Rome by phiposopher Cicero to describe another part of himself. Later on the term would be used for different psychologists to refer to different personality disorders. Eventually, the term became popular enough to be used by artists creating literature based on that concept , for example,  the tale of Dr. Jeckyll and Mr. Hyde.

answer placeholder because the system is messed up

answer: i looked it up

explanation: in 1955 in montgomery, alabama, a girl refused to give up her seat on a public bus. the girl was black, and the passenger looking to take her seat was white. this is a familiar tale, but it's not about rosa parks. the girl in the story is a 15-year-old high school student named claudette colvin, and this act of defiance occurred nine months before rosa parks did the same thing. colvin was arrested, and her case is what led to the u.s. supreme court's order for the desegregation of alabama's bus system. so, why don't we know colvin's name? "later i had a child born out of wedlock; i became pregnant when i was 16," colvin says. "and i didn't fit the image either, of, you know, someone they would want to show off.