Where did Hillary Clinton learn to speak in 30 ethnic and regional dialects?

It’s truly amazing how she can adapt to just about any culture that she is speaking to.
In addition to her Chicago dialect her additional dialects include Irish-American, Jewish-American, Italian-American, African-American, Asian-American, Russian-American, Germanic-American, Arab-American, Spanish-American, Franco-American, British-English, Chicano-Latino, Southern, Evangelic-Christian, Black-Baptist, Migrant-Worker, North-Eastern, South-Western, Hawaiian, Brooklyn, Philadelphia, Heartland-America, Cajun, Native-American, Pop-Culture, Hip-Hop, Biker, Gay-Lesbian and Canadian, and probably even more that we haven’t heard yet.
I have not been able to find any courses so far that teach that.
Do you think that she should open her own school ?

Hilary Clinton is good at transforming. She is a chameleon. I don’t know if that is a bad thing or a good thing.