For Black History Month, Curiosity is highlighting the inspirational stories that you should know (but probably don't) of people who have changed the world.
The story of Madam C.J. Walker has been called "one of the most spectacular rags-to-riches stories in U.S. history." Born on a Louisiana plantation in 1867, and orphaned at age 7, this inspirational trailblazer created a cosmetics empire as a single mother.