The first female slave to successfully sue for freedom is part of America's 'erased history

Meet Mum Bett, an incredible figure in American history who has largely been ignored.

In his new book, "Written Out of History: The Forgotten Founders Who Fought Big Government," Sen. Mike Lee (R-Utah) explores the stories of people like Mum Bett who have been erased from our history books.

The first African-American woman to escape slavery by bringing a lawsuit, Mum Bett sought the help of an abolitionist lawyer and successfully sued for her freedom.

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